172900538 has 8 divisors (see below), whose sum is σ = 261869088. Its totient is φ = 85610844.

The previous prime is 172900531. The next prime is 172900561. The reversal of 172900538 is 835009271.

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

It is a junction number, because it is equal to n+sod(n) for n = 172900498 and 172900507.

It is not an unprimeable number, because it can be changed into a prime (172900531) 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, 419456 + ... + 419867.

It is an arithmetic number, because the mean of its divisors is an integer number (32733636).

Almost surely, 2^172900538 is an apocalyptic number.

172900538 is a deficient number, since it is larger than the sum of its proper divisors (88968550).

172900538 is a wasteful number, since it uses less digits than its factorization.

172900538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 839428.

The product of its (nonzero) digits is 15120, while the sum is 35.

The square root of 172900538 is about 13149.1649164500. The cubic root of 172900538 is about 557.0986613263.

The spelling of 172900538 in words is "one hundred seventy-two million, nine hundred thousand, five hundred thirty-eight".