172746147 has 16 divisors (see below), whose sum is σ = 263416320. Its totient is φ = 98643072.

The previous prime is 172746139. The next prime is 172746193. The reversal of 172746147 is 741647271.

It is not a de Polignac number, because 172746147 - 2³ = 172746139 is a prime.

It is not an unprimeable number, because it can be changed into a prime (172746107) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 54379 + ... + 57467.

It is an arithmetic number, because the mean of its divisors is an integer number (16463520).

Almost surely, 2^172746147 is an apocalyptic number.

172746147 is a deficient number, since it is larger than the sum of its proper divisors (90670173).

172746147 is a wasteful number, since it uses less digits than its factorization.

172746147 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5762.

The product of its digits is 65856, while the sum is 39.

The square root of 172746147 is about 13143.2928522498. The cubic root of 172746147 is about 556.9327921042.

It can be divided in two parts, 1727 and 46147, that added together give a palindrome (47874).

The spelling of 172746147 in words is "one hundred seventy-two million, seven hundred forty-six thousand, one hundred forty-seven".