56240320 has 56 divisors (see below), whose sum is σ = 134800848. Its totient is φ = 22348800.

The previous prime is 56240311. The next prime is 56240321. The reversal of 56240320 is 2304265.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 56240291 and 56240300.

It is not an unprimeable number, because it can be changed into a prime (56240321) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 57435 + ... + 58405.

It is an arithmetic number, because the mean of its divisors is an integer number (2407158).

Almost surely, 2^56240320 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 56240320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (67400424).

56240320 is an abundant number, since it is smaller than the sum of its proper divisors (78560528).

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

56240320 is a wasteful number, since it uses less digits than its factorization.

56240320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1169 (or 1159 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 22.

The square root of 56240320 is about 7499.3546389006. The cubic root of 56240320 is about 383.1327360461.

Adding to 56240320 its reverse (2304265), we get a palindrome (58544585).

The spelling of 56240320 in words is "fifty-six million, two hundred forty thousand, three hundred twenty".