45639936 has 180 divisors, whose sum is σ = 142458624. Its totient is φ = 14515200.

The previous prime is 45639911. The next prime is 45639947. The reversal of 45639936 is 63993654.

It is a happy number.

45639936 is a `hidden beast` number, since 4 + 5 + 639 + 9 + 3 + 6 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 45639891 and 45639900.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 642781 + ... + 642851.

Almost surely, 2^45639936 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 45639936, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (71229312).

45639936 is an abundant number, since it is smaller than the sum of its proper divisors (96818688).

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

45639936 is an equidigital number, since it uses as much as digits as its factorization.

45639936 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130 (or 107 counting only the distinct ones).

The product of its digits is 524880, while the sum is 45.

The square root of 45639936 is about 6755.7335649062. The cubic root of 45639936 is about 357.3674628919.

The spelling of 45639936 in words is "forty-five million, six hundred thirty-nine thousand, nine hundred thirty-six".