745370172 has 18 divisors (see below), whose sum is σ = 1884130248. Its totient is φ = 248456712.

The previous prime is 745370167. The next prime is 745370173. The reversal of 745370172 is 271073547.

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 20704727 = 745370172 / (7 + 4 + 5 + 3 + 7 + 0 + 1 + 7 + 2).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (745370173) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 10352328 + ... + 10352399.

Almost surely, 2^745370172 is an apocalyptic number.

It is an amenable number.

745370172 is an abundant number, since it is smaller than the sum of its proper divisors (1138760076).

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

745370172 is a wasteful number, since it uses less digits than its factorization.

745370172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20704737 (or 20704732 counting only the distinct ones).

The product of its (nonzero) digits is 41160, while the sum is 36.

The square root of 745370172 is about 27301.4683121623. The cubic root of 745370172 is about 906.6868904682.

The spelling of 745370172 in words is "seven hundred forty-five million, three hundred seventy thousand, one hundred seventy-two".