45228978 has 12 divisors (see below), whose sum is σ = 97996158. Its totient is φ = 15076320.

The previous prime is 45228961. The next prime is 45229013. The reversal of 45228978 is 87982254.

It can be written as a sum of positive squares in only one way, i.e., 45118089 + 110889 = 6717^2 + 333^2 .

It is a Curzon number.

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, 1256343 + ... + 1256378.

Almost surely, 2^45228978 is an apocalyptic number.

45228978 is an abundant number, since it is smaller than the sum of its proper divisors (52767180).

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

45228978 is a wasteful number, since it uses less digits than its factorization.

45228978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2512729 (or 2512726 counting only the distinct ones).

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

The square root of 45228978 is about 6725.2492890598. The cubic root of 45228978 is about 356.2916065902.

The spelling of 45228978 in words is "forty-five million, two hundred twenty-eight thousand, nine hundred seventy-eight".