45172368 has 90 divisors (see below), whose sum is σ = 132378246. Its totient is φ = 14378496.

The previous prime is 45172339. The next prime is 45172373. The reversal of 45172368 is 86327154.

It can be written as a sum of positive squares in only one way, i.e., 40297104 + 4875264 = 6348^2 + 2208^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 75880 + ... + 76472.

Almost surely, 2^45172368 is an apocalyptic number.

45172368 is a gapful number since it is divisible by the number (48) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 45172368, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (66189123).

45172368 is an abundant number, since it is smaller than the sum of its proper divisors (87205878).

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

45172368 is a wasteful number, since it uses less digits than its factorization.

45172368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 653 (or 621 counting only the distinct ones).

The product of its digits is 40320, while the sum is 36.

The square root of 45172368 is about 6721.0392053610. The cubic root of 45172368 is about 356.1428959657.

The spelling of 45172368 in words is "forty-five million, one hundred seventy-two thousand, three hundred sixty-eight".