172930263 has 16 divisors (see below), whose sum is σ = 252437376. Its totient is φ = 104430240.

The previous prime is 172930237. The next prime is 172930271. The reversal of 172930263 is 362039271.

It is a happy number.

It is not a de Polignac number, because 172930263 - 2⁵ = 172930231 is a prime.

It is a super-2 number, since 2×172930263² = 59809751722498338, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172930213) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 81 + ... + 18597.

It is an arithmetic number, because the mean of its divisors is an integer number (15777336).

Almost surely, 2^172930263 is an apocalyptic number.

172930263 is a deficient number, since it is larger than the sum of its proper divisors (79507113).

172930263 is a wasteful number, since it uses less digits than its factorization.

172930263 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18814.

The product of its (nonzero) digits is 13608, while the sum is 33.

The square root of 172930263 is about 13150.2951677900. The cubic root of 172930263 is about 557.1305848992.

The spelling of 172930263 in words is "one hundred seventy-two million, nine hundred thirty thousand, two hundred sixty-three".