56734728 has 16 divisors (see below), whose sum is σ = 141836880. Its totient is φ = 18911568.

The previous prime is 56734723. The next prime is 56734747. The reversal of 56734728 is 82743765.

It is a super-2 number, since 2×56734728² = 6437658722467968, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 56734728.

It is not an unprimeable number, because it can be changed into a prime (56734723) 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, 1181950 + ... + 1181997.

It is an arithmetic number, because the mean of its divisors is an integer number (8864805).

Almost surely, 2^56734728 is an apocalyptic number.

It is an amenable number.

56734728 is an abundant number, since it is smaller than the sum of its proper divisors (85102152).

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

56734728 is a wasteful number, since it uses less digits than its factorization.

56734728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2363956 (or 2363952 counting only the distinct ones).

The product of its digits is 282240, while the sum is 42.

The square root of 56734728 is about 7532.2458802139. The cubic root of 56734728 is about 384.2521672684.

It can be divided in two parts, 5673 and 4728, that added together give a palindrome (10401).

The spelling of 56734728 in words is "fifty-six million, seven hundred thirty-four thousand, seven hundred twenty-eight".