56420586 has 48 divisors (see below), whose sum is σ = 132223104. Its totient is φ = 17319552.

The previous prime is 56420563. The next prime is 56420591. The reversal of 56420586 is 68502465.

56420586 is a `hidden beast` number, since 5 + 642 + 0 + 5 + 8 + 6 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 56420586.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12421 + ... + 16343.

It is an arithmetic number, because the mean of its divisors is an integer number (2754648).

Almost surely, 2^56420586 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 56420586, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (66111552).

56420586 is an abundant number, since it is smaller than the sum of its proper divisors (75802518).

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

56420586 is a wasteful number, since it uses less digits than its factorization.

56420586 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3995 (or 3992 counting only the distinct ones).

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

The square root of 56420586 is about 7511.3637909503. The cubic root of 56420586 is about 383.5416487571.

The spelling of 56420586 in words is "fifty-six million, four hundred twenty thousand, five hundred eighty-six".