45721928 has 32 divisors (see below), whose sum is σ = 98582400. Its totient is φ = 19473792.

The previous prime is 45721919. The next prime is 45721933. The reversal of 45721928 is 82912754.

It is a junction number, because it is equal to n+sod(n) for n = 45721891 and 45721900.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6908 + ... + 11796.

It is an arithmetic number, because the mean of its divisors is an integer number (3080700).

Almost surely, 2^45721928 is an apocalyptic number.

It is an amenable number.

45721928 is an abundant number, since it is smaller than the sum of its proper divisors (52860472).

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

45721928 is a wasteful number, since it uses less digits than its factorization.

45721928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5069 (or 5065 counting only the distinct ones).

The product of its digits is 40320, while the sum is 38.

The square root of 45721928 is about 6761.7991688603. The cubic root of 45721928 is about 357.5813380382.

The spelling of 45721928 in words is "forty-five million, seven hundred twenty-one thousand, nine hundred twenty-eight".