56621748 has 48 divisors (see below), whose sum is σ = 143575040. Its totient is φ = 17301600.

The previous prime is 56621693. The next prime is 56621753. The reversal of 56621748 is 84712665.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3063 + ... + 11073.

Almost surely, 2^56621748 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 56621748, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (71787520).

56621748 is an abundant number, since it is smaller than the sum of its proper divisors (86953292).

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

56621748 is a wasteful number, since it uses less digits than its factorization.

56621748 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8068 (or 8066 counting only the distinct ones).

The product of its digits is 80640, while the sum is 39.

The square root of 56621748 is about 7524.7423876170. The cubic root of 56621748 is about 383.9969346543.

The spelling of 56621748 in words is "fifty-six million, six hundred twenty-one thousand, seven hundred forty-eight".