172808383 has 8 divisors (see below), whose sum is σ = 199607760. Its totient is φ = 147857280.

The previous prime is 172808371. The next prime is 172808387. The reversal of 172808383 is 383808271.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 172808383 - 2²¹ = 170711231 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172808387) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 461868 + ... + 462241.

It is an arithmetic number, because the mean of its divisors is an integer number (24950970).

Almost surely, 2^172808383 is an apocalyptic number.

172808383 is a deficient number, since it is larger than the sum of its proper divisors (26799377).

172808383 is a wasteful number, since it uses less digits than its factorization.

172808383 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 924137.

The product of its (nonzero) digits is 64512, while the sum is 40.

The square root of 172808383 is about 13145.6602344652. The cubic root of 172808383 is about 556.9996669340. Note that the first 3 decimals are identical.

The spelling of 172808383 in words is "one hundred seventy-two million, eight hundred eight thousand, three hundred eighty-three".