56163420 has 72 divisors (see below), whose sum is σ = 172942224. Its totient is φ = 14750208.

The previous prime is 56163407. The next prime is 56163439. The reversal of 56163420 is 2436165.

56163420 is a `hidden beast` number, since 5 + 6 + 1 + 634 + 20 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9732 + ... + 14388.

Almost surely, 2^56163420 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 56163420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (86471112).

56163420 is an abundant number, since it is smaller than the sum of its proper divisors (116778804).

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

56163420 is a wasteful number, since it uses less digits than its factorization.

56163420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4739 (or 4734 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

The square root of 56163420 is about 7494.2257772234. The cubic root of 56163420 is about 382.9580313367.

Adding to 56163420 its reverse (2436165), we get a palindrome (58599585).

The spelling of 56163420 in words is "fifty-six million, one hundred sixty-three thousand, four hundred twenty".