56356380 has 72 divisors (see below), whose sum is σ = 173536272. Its totient is φ = 14800896.

The previous prime is 56356361. The next prime is 56356393. The reversal of 56356380 is 8365365.

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 23 ways as a sum of consecutive naturals, for example, 9724 + ... + 14396.

It is an arithmetic number, because the mean of its divisors is an integer number (2410226).

Almost surely, 2^56356380 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 56356380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (86768136).

56356380 is an abundant number, since it is smaller than the sum of its proper divisors (117179892).

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

56356380 is a wasteful number, since it uses less digits than its factorization.

56356380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4755 (or 4750 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 36.

The square root of 56356380 is about 7507.0886500693. The cubic root of 56356380 is about 383.3961048224.

The spelling of 56356380 in words is "fifty-six million, three hundred fifty-six thousand, three hundred eighty".