45409272 has 32 divisors (see below), whose sum is σ = 113806080. Its totient is φ = 15098720.

The previous prime is 45409253. The next prime is 45409339. The reversal of 45409272 is 27290454.

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, 8497 + ... + 12767.

It is an arithmetic number, because the mean of its divisors is an integer number (3556440).

Almost surely, 2^45409272 is an apocalyptic number.

It is an amenable number.

45409272 is an abundant number, since it is smaller than the sum of its proper divisors (68396808).

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

45409272 is a wasteful number, since it uses less digits than its factorization.

45409272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4723 (or 4719 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 33.

The square root of 45409272 is about 6738.6402189166. The cubic root of 45409272 is about 356.7644013563.

The spelling of 45409272 in words is "forty-five million, four hundred nine thousand, two hundred seventy-two".