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38805500000 = 255677611
BaseRepresentation
bin100100001000111111…
…001111000001100000
310201011102101122112202
4210020333033001200
51113433202000000
625454344312332
72542431210341
oct441077170140
9121142348482
1038805500000
1115503769563
12762ba726a8
133875765627
141c41ab00c8
151021bd5dd5
hex908fcf060

38805500000 has 84 divisors (see below), whose sum is σ = 95497918236. Its totient is φ = 15522000000.

The previous prime is 38805499937. The next prime is 38805500009. The reversal of 38805500000 is 550883.

It is a hoax number, since the sum of its digits (29) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38805500009) 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, 461195 + ... + 538805.

It is an arithmetic number, because the mean of its divisors is an integer number (1136879979).

Almost surely, 238805500000 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 38805500000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (47748959118).

38805500000 is an abundant number, since it is smaller than the sum of its proper divisors (56692418236).

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

38805500000 is an frugal number, since it uses more digits than its factorization.

38805500000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77651 (or 77618 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 29.

The spelling of 38805500000 in words is "thirty-eight billion, eight hundred five million, five hundred thousand".

Divisors: 1 2 4 5 8 10 16 20 25 32 40 50 80 100 125 160 200 250 400 500 625 800 1000 1250 2000 2500 3125 4000 5000 6250 10000 12500 15625 20000 25000 31250 50000 62500 77611 100000 125000 155222 250000 310444 388055 500000 620888 776110 1241776 1552220 1940275 2483552 3104440 3880550 6208880 7761100 9701375 12417760 15522200 19402750 31044400 38805500 48506875 62088800 77611000 97013750 155222000 194027500 242534375 310444000 388055000 485068750 776110000 970137500 1212671875 1552220000 1940275000 2425343750 3880550000 4850687500 7761100000 9701375000 19402750000 38805500000