172946907 has 20 divisors (see below), whose sum is σ = 295261296. Its totient is φ = 98826480.

The previous prime is 172946881. The next prime is 172946927. The reversal of 172946907 is 709649271.

It is not a de Polignac number, because 172946907 - 2⁷ = 172946779 is a prime.

It is not an unprimeable number, because it can be changed into a prime (172946927) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 151944 + ... + 153077.

Almost surely, 2^172946907 is an apocalyptic number.

172946907 is a deficient number, since it is larger than the sum of its proper divisors (122314389).

172946907 is an equidigital number, since it uses as much as digits as its factorization.

172946907 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 305040 (or 305031 counting only the distinct ones).

The product of its (nonzero) digits is 190512, while the sum is 45.

The square root of 172946907 is about 13150.9279900698. The cubic root of 172946907 is about 557.1484583545.

The spelling of 172946907 in words is "one hundred seventy-two million, nine hundred forty-six thousand, nine hundred seven".