172353668 has 48 divisors (see below), whose sum is σ = 320060160. Its totient is φ = 81120000.

The previous prime is 172353637. The next prime is 172353673. The reversal of 172353668 is 866353271.

It is a Smith number, since the sum of its digits (41) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (41).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 686543 + ... + 686793.

It is an arithmetic number, because the mean of its divisors is an integer number (6667920).

Almost surely, 2^172353668 is an apocalyptic number.

It is an amenable number.

172353668 is a deficient number, since it is larger than the sum of its proper divisors (147706492).

172353668 is a wasteful number, since it uses less digits than its factorization.

172353668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 428 (or 426 counting only the distinct ones).

The product of its digits is 181440, while the sum is 41.

The square root of 172353668 is about 13128.3535906069. The cubic root of 172353668 is about 556.5106887663.

The spelling of 172353668 in words is "one hundred seventy-two million, three hundred fifty-three thousand, six hundred sixty-eight".