56749240 has 32 divisors (see below), whose sum is σ = 127903680. Its totient is φ = 22660992.

The previous prime is 56749229. The next prime is 56749249. The reversal of 56749240 is 4294765.

It is a self number, because there is not a number n which added to its sum of digits gives 56749240.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56749249) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39169 + ... + 40591.

It is an arithmetic number, because the mean of its divisors is an integer number (3996990).

Almost surely, 2^56749240 is an apocalyptic number.

It is an amenable number.

56749240 is an abundant number, since it is smaller than the sum of its proper divisors (71154440).

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

56749240 is a wasteful number, since it uses less digits than its factorization.

56749240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2431 (or 2427 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 37.

The square root of 56749240 is about 7533.2091435191. The cubic root of 56749240 is about 384.2849266986.

The spelling of 56749240 in words is "fifty-six million, seven hundred forty-nine thousand, two hundred forty".