56489280 has 168 divisors, whose sum is σ = 190451232. Its totient is φ = 14183424.

The previous prime is 56489263. The next prime is 56489281. The reversal of 56489280 is 8298465.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56489281) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 346479 + ... + 346641.

Almost surely, 2^56489280 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 56489280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (95225616).

56489280 is an abundant number, since it is smaller than the sum of its proper divisors (133961952).

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

56489280 is a wasteful number, since it uses less digits than its factorization.

56489280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 221 (or 192 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 42.

The square root of 56489280 is about 7515.9350715663. The cubic root of 56489280 is about 383.6972440006.

The spelling of 56489280 in words is "fifty-six million, four hundred eighty-nine thousand, two hundred eighty".