56415940 has 96 divisors (see below), whose sum is σ = 144506880. Its totient is φ = 18071424.

The previous prime is 56415929. The next prime is 56415949. The reversal of 56415940 is 4951465.

It is a junction number, because it is equal to n+sod(n) for n = 56415896 and 56415905.

It is not an unprimeable number, because it can be changed into a prime (56415949) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 337737 + ... + 337903.

It is an arithmetic number, because the mean of its divisors is an integer number (1505280).

Almost surely, 2^56415940 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 56415940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (72253440).

56415940 is an abundant number, since it is smaller than the sum of its proper divisors (88090940).

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

56415940 is a wasteful number, since it uses less digits than its factorization.

56415940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 329 (or 327 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 34.

The square root of 56415940 is about 7511.0545198394. The cubic root of 56415940 is about 383.5311207829.

The spelling of 56415940 in words is "fifty-six million, four hundred fifteen thousand, nine hundred forty".