45631388 has 24 divisors (see below), whose sum is σ = 91701120. Its totient is φ = 19649520.

The previous prime is 45631387. The next prime is 45631393. The reversal of 45631388 is 88313654.

45631388 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45631381) 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, 26456 + ... + 28127.

It is an arithmetic number, because the mean of its divisors is an integer number (3820880).

Almost surely, 2^45631388 is an apocalyptic number.

It is an amenable number.

45631388 is an abundant number, since it is smaller than the sum of its proper divisors (46069732).

45631388 is a wasteful number, since it uses less digits than its factorization.

45631388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54617 (or 54615 counting only the distinct ones).

The product of its digits is 69120, while the sum is 38.

The square root of 45631388 is about 6755.1008874776. The cubic root of 45631388 is about 357.3451507966.

The spelling of 45631388 in words is "forty-five million, six hundred thirty-one thousand, three hundred eighty-eight".