56786738 has 4 divisors (see below), whose sum is σ = 85180110. Its totient is φ = 28393368.

The previous prime is 56786713. The next prime is 56786753. The reversal of 56786738 is 83768765.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 83768765 = 5 ⋅16753753.

It can be written as a sum of positive squares in only one way, i.e., 41049649 + 15737089 = 6407^2 + 3967^2 .

It is a super-2 number, since 2×56786738² = 6449467225361288, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14196683 + ... + 14196686.

Almost surely, 2^56786738 is an apocalyptic number.

56786738 is a deficient number, since it is larger than the sum of its proper divisors (28393372).

56786738 is a wasteful number, since it uses less digits than its factorization.

56786738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28393371.

The product of its digits is 1693440, while the sum is 50.

The square root of 56786738 is about 7535.6975788576. The cubic root of 56786738 is about 384.3695489389.

The spelling of 56786738 in words is "fifty-six million, seven hundred eighty-six thousand, seven hundred thirty-eight".