56349816 has 128 divisors (see below), whose sum is σ = 157593600. Its totient is φ = 16727040.

The previous prime is 56349809. The next prime is 56349817. The reversal of 56349816 is 61894365.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56349817) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 633100 + ... + 633188.

It is an arithmetic number, because the mean of its divisors is an integer number (1231200).

Almost surely, 2^56349816 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 56349816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (78796800).

56349816 is an abundant number, since it is smaller than the sum of its proper divisors (101243784).

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

56349816 is a wasteful number, since it uses less digits than its factorization.

56349816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 189 (or 185 counting only the distinct ones).

The product of its digits is 155520, while the sum is 42.

The square root of 56349816 is about 7506.6514505470. The cubic root of 56349816 is about 383.3812191387.

The spelling of 56349816 in words is "fifty-six million, three hundred forty-nine thousand, eight hundred sixteen".