56641420 has 48 divisors (see below), whose sum is σ = 131443200. Its totient is φ = 20329920.

The previous prime is 56641397. The next prime is 56641427. The reversal of 56641420 is 2414665.

It is not an unprimeable number, because it can be changed into a prime (56641427) 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 15 ways as a sum of consecutive naturals, for example, 15751 + ... + 19009.

It is an arithmetic number, because the mean of its divisors is an integer number (2738400).

Almost surely, 2^56641420 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 56641420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (65721600).

56641420 is an abundant number, since it is smaller than the sum of its proper divisors (74801780).

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

56641420 is a wasteful number, since it uses less digits than its factorization.

56641420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3358 (or 3356 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 56641420 is about 7526.0494284850. The cubic root of 56641420 is about 384.0413999780.

The spelling of 56641420 in words is "fifty-six million, six hundred forty-one thousand, four hundred twenty".