172939308 has 12 divisors (see below), whose sum is σ = 403525080. Its totient is φ = 57646432.

The previous prime is 172939307. The next prime is 172939309. The reversal of 172939308 is 803939271.

It is an interprime number because it is at equal distance from previous prime (172939307) and next prime (172939309).

It is a tau number, because it is divible by the number of its divisors (12).

It is a self number, because there is not a number n which added to its sum of digits gives 172939308.

It is not an unprimeable number, because it can be changed into a prime (172939307) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7205793 + ... + 7205816.

It is an arithmetic number, because the mean of its divisors is an integer number (33627090).

Almost surely, 2^172939308 is an apocalyptic number.

It is an amenable number.

172939308 is an abundant number, since it is smaller than the sum of its proper divisors (230585772).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

172939308 is a wasteful number, since it uses less digits than its factorization.

172939308 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14411616 (or 14411614 counting only the distinct ones).

The product of its (nonzero) digits is 81648, while the sum is 42.

The square root of 172939308 is about 13150.6390719235. The cubic root of 172939308 is about 557.1402981755.

The spelling of 172939308 in words is "one hundred seventy-two million, nine hundred thirty-nine thousand, three hundred eight".