45631812 has 12 divisors (see below), whose sum is σ = 106474256. Its totient is φ = 15210600.

The previous prime is 45631801. The next prime is 45631837. The reversal of 45631812 is 21813654.

It is a tau number, because it is divible by the number of its divisors (12).

It is a hoax number, since the sum of its digits (30) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 45631812.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1901314 + ... + 1901337.

Almost surely, 2^45631812 is an apocalyptic number.

It is an amenable number.

45631812 is an abundant number, since it is smaller than the sum of its proper divisors (60842444).

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

45631812 is a wasteful number, since it uses less digits than its factorization.

45631812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3802658 (or 3802656 counting only the distinct ones).

The product of its digits is 5760, while the sum is 30.

The square root of 45631812 is about 6755.1322710958. The cubic root of 45631812 is about 357.3462575924.

The spelling of 45631812 in words is "forty-five million, six hundred thirty-one thousand, eight hundred twelve".