172897316 has 12 divisors (see below), whose sum is σ = 302855280. Its totient is φ = 86367240.

The previous prime is 172897301. The next prime is 172897331. The reversal of 172897316 is 613798271.

It is an interprime number because it is at equal distance from previous prime (172897301) and next prime (172897331).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15446 + ... + 24173.

It is an arithmetic number, because the mean of its divisors is an integer number (25237940).

Almost surely, 2^172897316 is an apocalyptic number.

It is an amenable number.

172897316 is a deficient number, since it is larger than the sum of its proper divisors (129957964).

172897316 is a wasteful number, since it uses less digits than its factorization.

172897316 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40714 (or 40712 counting only the distinct ones).

The product of its digits is 127008, while the sum is 44.

The square root of 172897316 is about 13149.0423985931. The cubic root of 172897316 is about 557.0952007952.

The spelling of 172897316 in words is "one hundred seventy-two million, eight hundred ninety-seven thousand, three hundred sixteen".