56420080 has 80 divisors (see below), whose sum is σ = 137803680. Its totient is φ = 21453824.

The previous prime is 56420057. The next prime is 56420083. The reversal of 56420080 is 8002465.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56420083) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 192414 + ... + 192706.

It is an arithmetic number, because the mean of its divisors is an integer number (1722546).

Almost surely, 2^56420080 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 56420080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (68901840).

56420080 is an abundant number, since it is smaller than the sum of its proper divisors (81383600).

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

56420080 is a wasteful number, since it uses less digits than its factorization.

56420080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 418 (or 412 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 25.

The square root of 56420080 is about 7511.3301085760. The cubic root of 56420080 is about 383.5405021741.

The spelling of 56420080 in words is "fifty-six million, four hundred twenty thousand, eighty".