56415240 has 192 divisors, whose sum is σ = 213557760. Its totient is φ = 12648960.

The previous prime is 56415223. The next prime is 56415259. The reversal of 56415240 is 4251465.

56415240 is a `hidden beast` number, since 5 + 6 + 415 + 240 = 666.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 153537 + ... + 153903.

It is an arithmetic number, because the mean of its divisors is an integer number (1112280).

Almost surely, 2^56415240 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 56415240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (106778880).

56415240 is an abundant number, since it is smaller than the sum of its proper divisors (157142520).

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

56415240 is a wasteful number, since it uses less digits than its factorization.

56415240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 452 (or 445 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 27.

The square root of 56415240 is about 7511.0079217106. The cubic root of 56415240 is about 383.5295345120.

The spelling of 56415240 in words is "fifty-six million, four hundred fifteen thousand, two hundred forty".