56218368 has 72 divisors (see below), whose sum is σ = 151877376. Its totient is φ = 18457600.

The previous prime is 56218333. The next prime is 56218369. The reversal of 56218368 is 86381265.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (56218369) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 54013 + ... + 55043.

It is an arithmetic number, because the mean of its divisors is an integer number (2109408).

Almost surely, 2^56218368 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 56218368, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (75938688).

56218368 is an abundant number, since it is smaller than the sum of its proper divisors (95659008).

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

56218368 is a wasteful number, since it uses less digits than its factorization.

56218368 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1121 (or 1107 counting only the distinct ones).

The product of its digits is 69120, while the sum is 39.

The square root of 56218368 is about 7497.8909034474. The cubic root of 56218368 is about 383.0828808038.

The spelling of 56218368 in words is "fifty-six million, two hundred eighteen thousand, three hundred sixty-eight".