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808804000000 = 2856202201
BaseRepresentation
bin10111100010100000111…
…10011010000100000000
32212022122221102021112201
423301100132122010000
5101222412311000000
61415320500402544
7112301626365343
oct13612036320400
92768587367481
10808804000000
11292014855257
121109029a6454
135b367c43229
142b20971a45a
151608b1a496a
hexbc5079a100

808804000000 has 126 divisors (see below), whose sum is σ = 2018044910882. Its totient is φ = 323520000000.

The previous prime is 808803999967. The next prime is 808804000009. The reversal of 808804000000 is 408808.

It is a happy number.

It can be written as a sum of positive squares in 7 ways, for example, as 737647370496 + 71156629504 = 858864^2 + 266752^2 .

It is not an unprimeable number, because it can be changed into a prime (808804000009) by changing a digit.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 3898900 + ... + 4101100.

Almost surely, 2808804000000 is an apocalyptic number.

808804000000 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 808804000000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1009022455441).

808804000000 is an abundant number, since it is smaller than the sum of its proper divisors (1209240910882).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

808804000000 is an frugal number, since it uses more digits than its factorization.

808804000000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 202247 (or 202208 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 28.

Adding to 808804000000 its reverse (408808), we get a palindrome (808804408808).

The spelling of 808804000000 in words is "eight hundred eight billion, eight hundred four million", and thus it is an aban number.

Divisors: 1 2 4 5 8 10 16 20 25 32 40 50 64 80 100 125 128 160 200 250 256 320 400 500 625 640 800 1000 1250 1280 1600 2000 2500 3125 3200 4000 5000 6250 6400 8000 10000 12500 15625 16000 20000 25000 31250 32000 40000 50000 62500 80000 100000 125000 160000 200000 202201 250000 400000 404402 500000 800000 808804 1000000 1011005 1617608 2000000 2022010 3235216 4000000 4044020 5055025 6470432 8088040 10110050 12940864 16176080 20220100 25275125 25881728 32352160 40440200 50550250 51763456 64704320 80880400 101100500 126375625 129408640 161760800 202201000 252751250 258817280 323521600 404402000 505502500 631878125 647043200 808804000 1011005000 1263756250 1294086400 1617608000 2022010000 2527512500 3159390625 3235216000 4044020000 5055025000 6318781250 6470432000 8088040000 10110050000 12637562500 16176080000 20220100000 25275125000 32352160000 40440200000 50550250000 80880400000 101100500000 161760800000 202201000000 404402000000 808804000000