56878240 has 48 divisors (see below), whose sum is σ = 136025568. Its totient is φ = 22471936.

The previous prime is 56878231. The next prime is 56878247. The reversal of 56878240 is 4287865.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 56878193 and 56878202.

It is not an unprimeable number, because it can be changed into a prime (56878247) 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, 11139 + ... + 15421.

It is an arithmetic number, because the mean of its divisors is an integer number (2833866).

Almost surely, 2^56878240 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 56878240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (68012784).

56878240 is an abundant number, since it is smaller than the sum of its proper divisors (79147328).

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

56878240 is a wasteful number, since it uses less digits than its factorization.

56878240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4381 (or 4373 counting only the distinct ones).

The product of its (nonzero) digits is 107520, while the sum is 40.

The square root of 56878240 is about 7541.7663713483. The cubic root of 56878240 is about 384.5758864875.

The spelling of 56878240 in words is "fifty-six million, eight hundred seventy-eight thousand, two hundred forty".