56944890 has 32 divisors (see below), whose sum is σ = 151853760. Its totient is φ = 15185232.

The previous prime is 56944847. The next prime is 56944897. The reversal of 56944890 is 9844965.

It is a happy number.

56944890 is a `hidden beast` number, since 569 + 4 + 4 + 89 + 0 = 666.

It is a super-2 number, since 2×56944890² = 6485440994224200, which contains 22 as substring.

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

It is not an unprimeable number, because it can be changed into a prime (56944897) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 105184 + ... + 105723.

It is an arithmetic number, because the mean of its divisors is an integer number (4745430).

Almost surely, 2^56944890 is an apocalyptic number.

56944890 is an abundant number, since it is smaller than the sum of its proper divisors (94908870).

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

56944890 is a wasteful number, since it uses less digits than its factorization.

56944890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 210923 (or 210917 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 45.

The square root of 56944890 is about 7546.1838037514. The cubic root of 56944890 is about 384.7260433693.

The spelling of 56944890 in words is "fifty-six million, nine hundred forty-four thousand, eight hundred ninety".