56772240 has 160 divisors (see below), whose sum is σ = 205701120. Its totient is φ = 12682752.

The previous prime is 56772229. The next prime is 56772241. The reversal of 56772240 is 4227765.

It is not an unprimeable number, because it can be changed into a prime (56772241) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 78601 + ... + 79319.

It is an arithmetic number, because the mean of its divisors is an integer number (1285632).

Almost surely, 2^56772240 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 56772240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (102850560).

56772240 is an abundant number, since it is smaller than the sum of its proper divisors (148928880).

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

56772240 is a wasteful number, since it uses less digits than its factorization.

56772240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 789 (or 783 counting only the distinct ones).

The product of its (nonzero) digits is 23520, while the sum is 33.

The square root of 56772240 is about 7534.7355627122. The cubic root of 56772240 is about 384.3368355260.

The spelling of 56772240 in words is "fifty-six million, seven hundred seventy-two thousand, two hundred forty".