45311988 has 12 divisors (see below), whose sum is σ = 105728000. Its totient is φ = 15103992.

The previous prime is 45311971. The next prime is 45311989. The reversal of 45311988 is 88911354.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45311989) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1887988 + ... + 1888011.

Almost surely, 2^45311988 is an apocalyptic number.

It is an amenable number.

45311988 is an abundant number, since it is smaller than the sum of its proper divisors (60416012).

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

45311988 is a wasteful number, since it uses less digits than its factorization.

45311988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3776006 (or 3776004 counting only the distinct ones).

The product of its digits is 34560, while the sum is 39.

The square root of 45311988 is about 6731.4179784054. The cubic root of 45311988 is about 356.5094440052.

The spelling of 45311988 in words is "forty-five million, three hundred eleven thousand, nine hundred eighty-eight".