56818240 has 56 divisors (see below), whose sum is σ = 135998712. Its totient is φ = 22609920.

The previous prime is 56818219. The next prime is 56818241. The reversal of 56818240 is 4281865.

It can be written as a sum of positive squares in 4 ways, for example, as 7706176 + 49112064 = 2776^2 + 7008^2 .

It is a hoax number, since the sum of its digits (34) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 56818196 and 56818205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56818241) 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, 88320 + ... + 88960.

Almost surely, 2^56818240 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 56818240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (67999356).

56818240 is an abundant number, since it is smaller than the sum of its proper divisors (79180472).

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

56818240 is a wasteful number, since it uses less digits than its factorization.

56818240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 935 (or 925 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 34.

The square root of 56818240 is about 7537.7874737883. The cubic root of 56818240 is about 384.4406111366.

Subtracting from 56818240 its reverse (4281865), we obtain a triangular number (52536375 = T₁₀₂₅₀).

The spelling of 56818240 in words is "fifty-six million, eight hundred eighteen thousand, two hundred forty".