172813628 has 48 divisors (see below), whose sum is σ = 342752256. Its totient is φ = 75641280.

The previous prime is 172813609. The next prime is 172813631. The reversal of 172813628 is 826318271.

It is a junction number, because it is equal to n+sod(n) for n = 172813591 and 172813600.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 156125 + ... + 157227.

It is an arithmetic number, because the mean of its divisors is an integer number (7140672).

Almost surely, 2^172813628 is an apocalyptic number.

It is an amenable number.

172813628 is a deficient number, since it is larger than the sum of its proper divisors (169938628).

172813628 is a wasteful number, since it uses less digits than its factorization.

172813628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1274 (or 1272 counting only the distinct ones).

The product of its digits is 32256, while the sum is 38.

The square root of 172813628 is about 13145.8597284468. The cubic root of 172813628 is about 557.0053021423.

The spelling of 172813628 in words is "one hundred seventy-two million, eight hundred thirteen thousand, six hundred twenty-eight".