45423728 has 40 divisors (see below), whose sum is σ = 106502112. Its totient is φ = 18321408.

The previous prime is 45423701. The next prime is 45423733. The reversal of 45423728 is 82732454.

It is a congruent number.

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, 10025 + ... + 13832.

Almost surely, 2^45423728 is an apocalyptic number.

It is an amenable number.

45423728 is an abundant number, since it is smaller than the sum of its proper divisors (61078384).

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

45423728 is a wasteful number, since it uses less digits than its factorization.

45423728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23889 (or 23883 counting only the distinct ones).

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

The square root of 45423728 is about 6739.7127535230. The cubic root of 45423728 is about 356.8022558793.

The spelling of 45423728 in words is "forty-five million, four hundred twenty-three thousand, seven hundred twenty-eight".