172993208 has 16 divisors (see below), whose sum is σ = 324647880. Its totient is φ = 86420448.

The previous prime is 172993201. The next prime is 172993211. The reversal of 172993208 is 802399271.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172993201) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 791 + ... + 18617.

Almost surely, 2^172993208 is an apocalyptic number.

It is an amenable number.

172993208 is a deficient number, since it is larger than the sum of its proper divisors (151654672).

172993208 is a wasteful number, since it uses less digits than its factorization.

172993208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19046 (or 19042 counting only the distinct ones).

The product of its (nonzero) digits is 54432, while the sum is 41.

The square root of 172993208 is about 13152.6882423328. The cubic root of 172993208 is about 557.1981734752.

The spelling of 172993208 in words is "one hundred seventy-two million, nine hundred ninety-three thousand, two hundred eight".