56403900 has 162 divisors, whose sum is σ = 205820160. Its totient is φ = 12882240.

The previous prime is 56403877. The next prime is 56403929. The reversal of 56403900 is 930465.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 53 ways as a sum of consecutive naturals, for example, 43461 + ... + 44739.

Almost surely, 2^56403900 is an apocalyptic number.

56403900 is a gapful number since it is divisible by the number (50) 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 56403900, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (102910080).

56403900 is an abundant number, since it is smaller than the sum of its proper divisors (149416260).

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

56403900 is a wasteful number, since it uses less digits than its factorization.

56403900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1313 (or 1296 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 27.

The square root of 56403900 is about 7510.2529917440. The cubic root of 56403900 is about 383.5038350948.

The spelling of 56403900 in words is "fifty-six million, four hundred three thousand, nine hundred".