56404073400 has 96 divisors (see below), whose sum is σ = 178151834160. Its totient is φ = 14757283840.

The previous prime is 56404073393. The next prime is 56404073419. The reversal of 56404073400 is 437040465.

It is a happy number.

It is a super-2 number, since 2×56404073400² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 855057 + ... + 918656.

Almost surely, 2^56404073400 is an apocalyptic number.

56404073400 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

56404073400 is an abundant number, since it is smaller than the sum of its proper divisors (121747760760).

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

56404073400 is a wasteful number, since it uses less digits than its factorization.

56404073400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1773785 (or 1773776 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 33.

The spelling of 56404073400 in words is "fifty-six billion, four hundred four million, seventy-three thousand, four hundred".