45291988 has 24 divisors (see below), whose sum is σ = 91169792. Its totient is φ = 19285344.

The previous prime is 45291937. The next prime is 45291989. The reversal of 45291988 is 88919254.

45291988 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45291989) 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 7 ways as a sum of consecutive naturals, for example, 756 + ... + 9547.

Almost surely, 2^45291988 is an apocalyptic number.

It is an amenable number.

45291988 is an abundant number, since it is smaller than the sum of its proper divisors (45877804).

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

45291988 is a wasteful number, since it uses less digits than its factorization.

45291988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10471 (or 10469 counting only the distinct ones).

The product of its digits is 207360, while the sum is 46.

The square root of 45291988 is about 6729.9322433439. The cubic root of 45291988 is about 356.4569837292.

The spelling of 45291988 in words is "forty-five million, two hundred ninety-one thousand, nine hundred eighty-eight".