56947320 has 128 divisors (see below), whose sum is σ = 192902400. Its totient is φ = 14940288.

The previous prime is 56947307. The next prime is 56947339. The reversal of 56947320 is 2374965.

56947320 is a `hidden beast` number, since 569 + 4 + 73 + 20 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 71967 + ... + 72753.

It is an arithmetic number, because the mean of its divisors is an integer number (1507050).

Almost surely, 2^56947320 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 56947320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (96451200).

56947320 is an abundant number, since it is smaller than the sum of its proper divisors (135955080).

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

56947320 is a wasteful number, since it uses less digits than its factorization.

56947320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 874 (or 864 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 36.

The square root of 56947320 is about 7546.3448105689. The cubic root of 56947320 is about 384.7315157420.

It can be divided in two parts, 56 and 947320, that added together give a triangular number (947376 = T₁₃₇₆).

The spelling of 56947320 in words is "fifty-six million, nine hundred forty-seven thousand, three hundred twenty".