45289872 has 30 divisors (see below), whose sum is σ = 126749142. Its totient is φ = 15096576.

The previous prime is 45289861. The next prime is 45289897. The reversal of 45289872 is 27898254.

It can be written as a sum of positive squares in only one way, i.e., 36433296 + 8856576 = 6036^2 + 2976^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 157113 + ... + 157400.

Almost surely, 2^45289872 is an apocalyptic number.

It is an amenable number.

45289872 is an abundant number, since it is smaller than the sum of its proper divisors (81459270).

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

45289872 is a wasteful number, since it uses less digits than its factorization.

45289872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 314527 (or 314518 counting only the distinct ones).

The product of its digits is 322560, while the sum is 45.

The square root of 45289872 is about 6729.7750333871. The cubic root of 45289872 is about 356.4514325287.

It can be divided in two parts, 4528 and 9872, that added together give a square (14400 = 120²).

The spelling of 45289872 in words is "forty-five million, two hundred eighty-nine thousand, eight hundred seventy-two".