56210240 has 56 divisors (see below), whose sum is σ = 134553960. Its totient is φ = 22366208.

The previous prime is 56210233. The next prime is 56210249. The reversal of 56210240 is 4201265.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 379456 + 55830784 = 616^2 + 7472^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56210249) 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, 85754 + ... + 86406.

Almost surely, 2^56210240 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 56210240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (67276980).

56210240 is an abundant number, since it is smaller than the sum of its proper divisors (78343720).

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

56210240 is a wasteful number, since it uses less digits than its factorization.

56210240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 939 (or 929 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 56210240 is about 7497.3488647655. The cubic root of 56210240 is about 383.0644179903.

The spelling of 56210240 in words is "fifty-six million, two hundred ten thousand, two hundred forty".