45431928 has 40 divisors (see below), whose sum is σ = 127253280. Its totient is φ = 15143760.

The previous prime is 45431927. The next prime is 45431941. The reversal of 45431928 is 82913454.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 45431892 and 45431901.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45431927) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 34408 + ... + 35703.

It is an arithmetic number, because the mean of its divisors is an integer number (3181332).

Almost surely, 2^45431928 is an apocalyptic number.

It is an amenable number.

45431928 is an abundant number, since it is smaller than the sum of its proper divisors (81821352).

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

45431928 is a wasteful number, since it uses less digits than its factorization.

45431928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70129 (or 70116 counting only the distinct ones).

The product of its digits is 34560, while the sum is 36.

The square root of 45431928 is about 6740.3210606024. The cubic root of 45431928 is about 356.8237248530.

The spelling of 45431928 in words is "forty-five million, four hundred thirty-one thousand, nine hundred twenty-eight".