45728432 has 20 divisors (see below), whose sum is σ = 89279256. Its totient is φ = 22688640.

The previous prime is 45728429. The next prime is 45728437. The reversal of 45728432 is 23482754.

It is a junction number, because it is equal to n+sod(n) for n = 45728392 and 45728401.

It is not an unprimeable number, because it can be changed into a prime (45728437) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8813 + ... + 13004.

Almost surely, 2^45728432 is an apocalyptic number.

It is an amenable number.

45728432 is a deficient number, since it is larger than the sum of its proper divisors (43550824).

45728432 is a wasteful number, since it uses less digits than its factorization.

45728432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21956 (or 21950 counting only the distinct ones).

The product of its digits is 53760, while the sum is 35.

The square root of 45728432 is about 6762.2800888458. The cubic root of 45728432 is about 357.5982926947.

The spelling of 45728432 in words is "forty-five million, seven hundred twenty-eight thousand, four hundred thirty-two".