45772728 has 64 divisors (see below), whose sum is σ = 118329120. Its totient is φ = 14745600.

The previous prime is 45772717. The next prime is 45772733. The reversal of 45772728 is 82727754.

It is a self number, because there is not a number n which added to its sum of digits gives 45772728.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 177976 + ... + 178232.

Almost surely, 2^45772728 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 45772728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (59164560).

45772728 is an abundant number, since it is smaller than the sum of its proper divisors (72556392).

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

45772728 is a wasteful number, since it uses less digits than its factorization.

45772728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 488 (or 484 counting only the distinct ones).

The product of its digits is 219520, while the sum is 42.

The square root of 45772728 is about 6765.5545227276. The cubic root of 45772728 is about 357.7137209696.

The spelling of 45772728 in words is "forty-five million, seven hundred seventy-two thousand, seven hundred twenty-eight".