56973690 has 96 divisors (see below), whose sum is σ = 155675520. Its totient is φ = 14437248.

The previous prime is 56973689. The next prime is 56973701. The reversal of 56973690 is 9637965.

It is a super-2 number, since 2×56973690² = 6492002704432200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 216499 + ... + 216761.

It is an arithmetic number, because the mean of its divisors is an integer number (1621620).

Almost surely, 2^56973690 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 56973690, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (77837760).

56973690 is an abundant number, since it is smaller than the sum of its proper divisors (98701830).

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

56973690 is a wasteful number, since it uses less digits than its factorization.

56973690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 388 (or 385 counting only the distinct ones).

The product of its (nonzero) digits is 306180, while the sum is 45.

The square root of 56973690 is about 7548.0918118422. The cubic root of 56973690 is about 384.7908911115.

The spelling of 56973690 in words is "fifty-six million, nine hundred seventy-three thousand, six hundred ninety".