56440336 has 80 divisors (see below), whose sum is σ = 122135040. Its totient is φ = 25159680.

The previous prime is 56440333. The next prime is 56440339. The reversal of 56440336 is 63304465.

It is an interprime number because it is at equal distance from previous prime (56440333) and next prime (56440339).

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a junction number, because it is equal to n+sod(n) for n = 56440298 and 56440307.

It is not an unprimeable number, because it can be changed into a prime (56440333) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 499416 + ... + 499528.

It is an arithmetic number, because the mean of its divisors is an integer number (1526688).

Almost surely, 2^56440336 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 56440336, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (61067520).

56440336 is an abundant number, since it is smaller than the sum of its proper divisors (65694704).

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

56440336 is a wasteful number, since it uses less digits than its factorization.

56440336 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 224 (or 218 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 31.

The square root of 56440336 is about 7512.6783506284. The cubic root of 56440336 is about 383.5863963950.

The spelling of 56440336 in words is "fifty-six million, four hundred forty thousand, three hundred thirty-six".