56839440 has 160 divisors (see below), whose sum is σ = 210272256. Its totient is φ = 12418560.

The previous prime is 56839439. The next prime is 56839451. The reversal of 56839440 is 4493865.

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 31 ways as a sum of consecutive naturals, for example, 37905 + ... + 39375.

Almost surely, 2^56839440 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 56839440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (105136128).

56839440 is an abundant number, since it is smaller than the sum of its proper divisors (153432816).

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

56839440 is a wasteful number, since it uses less digits than its factorization.

56839440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1517 (or 1511 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 39.

The square root of 56839440 is about 7539.1935908292. The cubic root of 56839440 is about 384.4884193024.

The spelling of 56839440 in words is "fifty-six million, eight hundred thirty-nine thousand, four hundred forty".