56897280 has 216 divisors, whose sum is σ = 215233200. Its totient is φ = 13762560.

The previous prime is 56897279. The next prime is 56897293. The reversal of 56897280 is 8279865.

56897280 is a `hidden beast` number, since 568 + 9 + 7 + 2 + 80 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

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, 126496 + ... + 126944.

It is an arithmetic number, because the mean of its divisors is an integer number (996450).

Almost surely, 2^56897280 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 56897280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (107616600).

56897280 is an abundant number, since it is smaller than the sum of its proper divisors (158335920).

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

56897280 is a wasteful number, since it uses less digits than its factorization.

56897280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 487 (or 470 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 45.

The square root of 56897280 is about 7543.0285694806. The cubic root of 56897280 is about 384.6187939800.

The spelling of 56897280 in words is "fifty-six million, eight hundred ninety-seven thousand, two hundred eighty".