56995988 has 48 divisors (see below), whose sum is σ = 117331200. Its totient is φ = 23721984.

The previous prime is 56995987. The next prime is 56995993. The reversal of 56995988 is 88959965.

It is a super-2 number, since 2×56995988² = 6497085296192288, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56995987) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 286313 + ... + 286511.

It is an arithmetic number, because the mean of its divisors is an integer number (2444400).

Almost surely, 2^56995988 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 56995988, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (58665600).

56995988 is an abundant number, since it is smaller than the sum of its proper divisors (60335212).

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

56995988 is a wasteful number, since it uses less digits than its factorization.

56995988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 456 (or 454 counting only the distinct ones).

The product of its digits is 6998400, while the sum is 59.

The square root of 56995988 is about 7549.5687294043. The cubic root of 56995988 is about 384.8410835670.

The spelling of 56995988 in words is "fifty-six million, nine hundred ninety-five thousand, nine hundred eighty-eight".