172097946 has 28 divisors (see below), whose sum is σ = 387046602. Its totient is φ = 57365496.

The previous prime is 172097941. The next prime is 172097963. The reversal of 172097946 is 649790271.

It can be written as a sum of positive squares in only one way, i.e., 152250921 + 19847025 = 12339^2 + 4455^2 .

It is not an unprimeable number, because it can be changed into a prime (172097941) by changing a digit.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 57561 + ... + 60476.

Almost surely, 2^172097946 is an apocalyptic number.

172097946 is an abundant number, since it is smaller than the sum of its proper divisors (214948656).

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

172097946 is an equidigital number, since it uses as much as digits as its factorization.

172097946 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118057 (or 118042 counting only the distinct ones).

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

The square root of 172097946 is about 13118.6106733907. The cubic root of 172097946 is about 556.2353199678.

The spelling of 172097946 in words is "one hundred seventy-two million, ninety-seven thousand, nine hundred forty-six".