56386620 has 72 divisors (see below), whose sum is σ = 181110384. Its totient is φ = 14151168.

The previous prime is 56386607. The next prime is 56386651. The reversal of 56386620 is 2668365.

56386620 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6154 + ... + 12273.

It is an arithmetic number, because the mean of its divisors is an integer number (2515422).

Almost surely, 2^56386620 is an apocalyptic number.

It is an amenable number.

56386620 is an abundant number, since it is smaller than the sum of its proper divisors (124723764).

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

56386620 is a wasteful number, since it uses less digits than its factorization.

56386620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18459 (or 18454 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 36.

The square root of 56386620 is about 7509.1024763283. The cubic root of 56386620 is about 383.4646674537.

The spelling of 56386620 in words is "fifty-six million, three hundred eighty-six thousand, six hundred twenty".