45665728 has 28 divisors (see below), whose sum is σ = 93545152. Its totient is φ = 22095360.

The previous prime is 45665707. The next prime is 45665747. The reversal of 45665728 is 82756654.

It is a congruent number.

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, 9525 + ... + 13492.

Almost surely, 2^45665728 is an apocalyptic number.

It is an amenable number.

45665728 is an abundant number, since it is smaller than the sum of its proper divisors (47879424).

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

45665728 is a wasteful number, since it uses less digits than its factorization.

45665728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23060 (or 23050 counting only the distinct ones).

The product of its digits is 403200, while the sum is 43.

The square root of 45665728 is about 6757.6421923627. The cubic root of 45665728 is about 357.4347686091.

The spelling of 45665728 in words is "forty-five million, six hundred sixty-five thousand, seven hundred twenty-eight".