56428650 has 60 divisors (see below), whose sum is σ = 156799302. Its totient is φ = 15046560.

The previous prime is 56428609. The next prime is 56428657. The reversal of 56428650 is 5682465.

56428650 is a `hidden beast` number, since 5 + 642 + 8 + 6 + 5 + 0 = 666.

It can be written as a sum of positive squares in 3 ways, for example, as 54863649 + 1565001 = 7407^2 + 1251^2 .

It is not an unprimeable number, because it can be changed into a prime (56428657) by changing a digit.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 2917 + ... + 11016.

Almost surely, 2^56428650 is an apocalyptic number.

56428650 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

56428650 is an abundant number, since it is smaller than the sum of its proper divisors (100370652).

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

56428650 is a wasteful number, since it uses less digits than its factorization.

56428650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13957 (or 13943 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 36.

The square root of 56428650 is about 7511.9005584472. The cubic root of 56428650 is about 383.5599206488.

The spelling of 56428650 in words is "fifty-six million, four hundred twenty-eight thousand, six hundred fifty".