45731388 has 24 divisors (see below), whose sum is σ = 106916992. Its totient is φ = 15213744.

The previous prime is 45731381. The next prime is 45731401. The reversal of 45731388 is 88313754.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45731381) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3081 + ... + 10047.

Almost surely, 2^45731388 is an apocalyptic number.

It is an amenable number.

45731388 is an abundant number, since it is smaller than the sum of its proper divisors (61185604).

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

45731388 is a wasteful number, since it uses less digits than its factorization.

45731388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7521 (or 7519 counting only the distinct ones).

The product of its digits is 80640, while the sum is 39.

The square root of 45731388 is about 6762.4986506468. The cubic root of 45731388 is about 357.6059978775.

The spelling of 45731388 in words is "forty-five million, seven hundred thirty-one thousand, three hundred eighty-eight".