100556904 has 128 divisors (see below), whose sum is σ = 307618560. Its totient is φ = 26738688.

The previous prime is 100556857. The next prime is 100556927. The reversal of 100556904 is 409655001.

It is a super-2 number, since 2×100556904² = 20223381884130432, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 391144 + ... + 391400.

It is an arithmetic number, because the mean of its divisors is an integer number (2403270).

Almost surely, 2^100556904 is an apocalyptic number.

100556904 is a gapful number since it is divisible by the number (14) 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 100556904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (153809280).

100556904 is an abundant number, since it is smaller than the sum of its proper divisors (207061656).

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

100556904 is a wasteful number, since it uses less digits than its factorization.

100556904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 427 (or 423 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 30.

The square root of 100556904 is about 10027.8065398172. The cubic root of 100556904 is about 465.0189285855.

The spelling of 100556904 in words is "one hundred million, five hundred fifty-six thousand, nine hundred four".