56872730 has 8 divisors (see below), whose sum is σ = 102370932. Its totient is φ = 22749088.

The previous prime is 56872723. The next prime is 56872793. The reversal of 56872730 is 3727865.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 51165409 + 5707321 = 7153^2 + 2389^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2843627 + ... + 2843646.

Almost surely, 2^56872730 is an apocalyptic number.

56872730 is a deficient number, since it is larger than the sum of its proper divisors (45498202).

56872730 is a wasteful number, since it uses less digits than its factorization.

56872730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5687280.

The product of its (nonzero) digits is 70560, while the sum is 38.

The square root of 56872730 is about 7541.4010634629. The cubic root of 56872730 is about 384.5634676693.

The spelling of 56872730 in words is "fifty-six million, eight hundred seventy-two thousand, seven hundred thirty".