172818230 has 16 divisors (see below), whose sum is σ = 335001744. Its totient is φ = 63809760.

The previous prime is 172818227. The next prime is 172818253. The reversal of 172818230 is 32818271.

It is a super-2 number, since 2×172818230² = 59732281240665800, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 664556 + ... + 664815.

It is an arithmetic number, because the mean of its divisors is an integer number (20937609).

Almost surely, 2^172818230 is an apocalyptic number.

172818230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

172818230 is a deficient number, since it is larger than the sum of its proper divisors (162183514).

172818230 is a wasteful number, since it uses less digits than its factorization.

172818230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1329391.

The product of its (nonzero) digits is 5376, while the sum is 32.

The square root of 172818230 is about 13146.0347633802. The cubic root of 172818230 is about 557.0102464199.

The spelling of 172818230 in words is "one hundred seventy-two million, eight hundred eighteen thousand, two hundred thirty".