172745274 has 32 divisors (see below), whose sum is σ = 378383040. Its totient is φ = 52250112.

The previous prime is 172745269. The next prime is 172745291. The reversal of 172745274 is 472547271.

172745274 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 (39).

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14167 + ... + 23370.

It is an arithmetic number, because the mean of its divisors is an integer number (11824470).

Almost surely, 2^172745274 is an apocalyptic number.

172745274 is an abundant number, since it is smaller than the sum of its proper divisors (205637766).

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

172745274 is a wasteful number, since it uses less digits than its factorization.

172745274 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37614.

The product of its digits is 109760, while the sum is 39.

The square root of 172745274 is about 13143.2596413523. The cubic root of 172745274 is about 556.9318539199.

The spelling of 172745274 in words is "one hundred seventy-two million, seven hundred forty-five thousand, two hundred seventy-four".