56972970 has 80 divisors (see below), whose sum is σ = 157417128. Its totient is φ = 14774400.

The previous prime is 56972969. The next prime is 56972999. The reversal of 56972970 is 7927965.

It can be written as a sum of positive squares in 4 ways, for example, as 44715969 + 12257001 = 6687^2 + 3501^2 .

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

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 29020 + ... + 30920.

Almost surely, 2^56972970 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 56972970, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (78708564).

56972970 is an abundant number, since it is smaller than the sum of its proper divisors (100444158).

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

56972970 is a wasteful number, since it uses less digits than its factorization.

56972970 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1957 (or 1948 counting only the distinct ones).

The product of its (nonzero) digits is 238140, while the sum is 45.

The square root of 56972970 is about 7548.0441175181. The cubic root of 56972970 is about 384.7892701843.

The spelling of 56972970 in words is "fifty-six million, nine hundred seventy-two thousand, nine hundred seventy".