56742644 has 12 divisors (see below), whose sum is σ = 113485344. Its totient is φ = 24318264.

The previous prime is 56742643. The next prime is 56742689. The reversal of 56742644 is 44624765.

56742644 is an admirable number.

It is a super-2 number, since 2×56742644² = 6439455296221472, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 56742598 and 56742607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56742641) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1013234 + ... + 1013289.

It is an arithmetic number, because the mean of its divisors is an integer number (9457112).

Almost surely, 2^56742644 is an apocalyptic number.

It is an amenable number.

56742644 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

56742644 is a wasteful number, since it uses less digits than its factorization.

56742644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2026534 (or 2026532 counting only the distinct ones).

The product of its digits is 161280, while the sum is 38.

The square root of 56742644 is about 7532.7713359693. The cubic root of 56742644 is about 384.2700375618.

The spelling of 56742644 in words is "fifty-six million, seven hundred forty-two thousand, six hundred forty-four".