56386990 has 16 divisors (see below), whose sum is σ = 110723760. Its totient is φ = 20504320.

The previous prime is 56386907. The next prime is 56387017. The reversal of 56386990 is 9968365.

It is a self number, because there is not a number n which added to its sum of digits gives 56386990.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 256195 + ... + 256414.

It is an arithmetic number, because the mean of its divisors is an integer number (6920235).

Almost surely, 2^56386990 is an apocalyptic number.

56386990 is a deficient number, since it is larger than the sum of its proper divisors (54336770).

56386990 is a wasteful number, since it uses less digits than its factorization.

56386990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 512627.

The product of its (nonzero) digits is 349920, while the sum is 46.

The square root of 56386990 is about 7509.1271130538. The cubic root of 56386990 is about 383.4655061966.

The spelling of 56386990 in words is "fifty-six million, three hundred eighty-six thousand, nine hundred ninety".