56426216 has 64 divisors (see below), whose sum is σ = 133056000. Its totient is φ = 21792960.

The previous prime is 56426197. The next prime is 56426297. The reversal of 56426216 is 61262465.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 85295 + ... + 85953.

It is an arithmetic number, because the mean of its divisors is an integer number (2079000).

Almost surely, 2^56426216 is an apocalyptic number.

56426216 is a gapful number since it is divisible by the number (56) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 56426216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (66528000).

56426216 is an abundant number, since it is smaller than the sum of its proper divisors (76629784).

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

56426216 is a wasteful number, since it uses less digits than its factorization.

56426216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 822 (or 818 counting only the distinct ones).

The product of its digits is 17280, while the sum is 32.

The square root of 56426216 is about 7511.7385471008. The cubic root of 56426216 is about 383.5544057300.

The spelling of 56426216 in words is "fifty-six million, four hundred twenty-six thousand, two hundred sixteen".