55712928 has 24 divisors (see below), whose sum is σ = 146246688. Its totient is φ = 18570944.

The previous prime is 55712903. The next prime is 55712941. The reversal of 55712928 is 82921755.

It is a tau number, because it is divible by the number of its divisors (24).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 290076 + ... + 290267.

It is an arithmetic number, because the mean of its divisors is an integer number (6093612).

Almost surely, 2^55712928 is an apocalyptic number.

It is an amenable number.

55712928 is an abundant number, since it is smaller than the sum of its proper divisors (90533760).

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

55712928 is a wasteful number, since it uses less digits than its factorization.

55712928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 580356 (or 580348 counting only the distinct ones).

The product of its digits is 50400, while the sum is 39.

The square root of 55712928 is about 7464.1093239582. The cubic root of 55712928 is about 381.9313674748.

The spelling of 55712928 in words is "fifty-five million, seven hundred twelve thousand, nine hundred twenty-eight".