Search a number
-
+
20000908800 = 293452101191
BaseRepresentation
bin10010101000001001…
…011010011000000000
31220121220020102220000
4102220021122120000
5311430213040200
613104400520000
71305432630315
oct225011323000
956556212800
1020000908800
118533a9a8a4
123a62320000
131b699354a2
14d7a480d0c
157c0d9a300
hex4a825a600

20000908800 has 600 divisors, whose sum is σ = 75149154432. Its totient is φ = 5253120000.

The previous prime is 20000908789. The next prime is 20000908841. The reversal of 20000908800 is 880900002.

It is a tau number, because it is divible by the number of its divisors (600).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 104716705 + ... + 104716895.

Almost surely, 220000908800 is an apocalyptic number.

20000908800 is a gapful number since it is divisible by the number (20) 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 20000908800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37574577216).

20000908800 is an abundant number, since it is smaller than the sum of its proper divisors (55148245632).

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

20000908800 is a wasteful number, since it uses less digits than its factorization.

20000908800 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 332 (or 302 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 27.

The spelling of 20000908800 in words is "twenty billion, nine hundred eight thousand, eight hundred".