56854640 has 20 divisors (see below), whose sum is σ = 132187224. Its totient is φ = 22741824.

The previous prime is 56854639. The next prime is 56854657. The reversal of 56854640 is 4645865.

It is a tau number, because it is divible by the number of its divisors (20).

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 56854594 and 56854603.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 355262 + ... + 355421.

Almost surely, 2^56854640 is an apocalyptic number.

It is an amenable number.

56854640 is an abundant number, since it is smaller than the sum of its proper divisors (75332584).

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

56854640 is a wasteful number, since it uses less digits than its factorization.

56854640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 710696 (or 710690 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 38.

The square root of 56854640 is about 7540.2015888171. The cubic root of 56854640 is about 384.5226895385.

The spelling of 56854640 in words is "fifty-six million, eight hundred fifty-four thousand, six hundred forty".