56919840 has 48 divisors (see below), whose sum is σ = 179299008. Its totient is φ = 15178496.

The previous prime is 56919833. The next prime is 56919847. The reversal of 56919840 is 4891965.

It is an interprime number because it is at equal distance from previous prime (56919833) and next prime (56919847).

It is a tau number, because it is divible by the number of its divisors (48).

It is a junction number, because it is equal to n+sod(n) for n = 56919792 and 56919801.

It is not an unprimeable number, because it can be changed into a prime (56919847) 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, 58812 + ... + 59771.

It is an arithmetic number, because the mean of its divisors is an integer number (3735396).

Almost surely, 2^56919840 is an apocalyptic number.

It is an amenable number.

56919840 is an abundant number, since it is smaller than the sum of its proper divisors (122379168).

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

56919840 is a wasteful number, since it uses less digits than its factorization.

56919840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118601 (or 118593 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 42.

The square root of 56919840 is about 7544.5238418339. The cubic root of 56919840 is about 384.6696215616.

The spelling of 56919840 in words is "fifty-six million, nine hundred nineteen thousand, eight hundred forty".