45947188 has 12 divisors (see below), whose sum is σ = 91894432. Its totient is φ = 19691640.

The previous prime is 45947179. The next prime is 45947189. The reversal of 45947188 is 88174954.

45947188 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

45947188 is an admirable number.

It is a super-2 number, since 2×45947188² = 4222288170214688, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45947189) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 820458 + ... + 820513.

Almost surely, 2^45947188 is an apocalyptic number.

It is an amenable number.

45947188 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

45947188 is a wasteful number, since it uses less digits than its factorization.

45947188 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1640982 (or 1640980 counting only the distinct ones).

The product of its digits is 322560, while the sum is 46.

The square root of 45947188 is about 6778.4355127124. The cubic root of 45947188 is about 358.1676129080.

The spelling of 45947188 in words is "forty-five million, nine hundred forty-seven thousand, one hundred eighty-eight".