56020400 has 60 divisors (see below), whose sum is σ = 137761272. Its totient is φ = 21880320.

The previous prime is 56020399. The next prime is 56020403. The reversal of 56020400 is 402065.

It is not an unprimeable number, because it can be changed into a prime (56020403) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15572 + ... + 18828.

Almost surely, 2^56020400 is an apocalyptic number.

56020400 is a gapful number since it is divisible by the number (50) 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 56020400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (68880636).

56020400 is an abundant number, since it is smaller than the sum of its proper divisors (81740872).

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

56020400 is a wasteful number, since it uses less digits than its factorization.

56020400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3318 (or 3307 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 17.

The square root of 56020400 is about 7484.6776817709. The cubic root of 56020400 is about 382.6326878146.

Adding to 56020400 its reverse (402065), we get a palindrome (56422465).

The spelling of 56020400 in words is "fifty-six million, twenty thousand, four hundred".