172347312 has 40 divisors (see below), whose sum is σ = 449328880. Its totient is φ = 56920320.

The previous prime is 172347289. The next prime is 172347337. The reversal of 172347312 is 213743271.

172347312 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 172347312.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11239 + ... + 21702.

It is an arithmetic number, because the mean of its divisors is an integer number (11233222).

Almost surely, 2^172347312 is an apocalyptic number.

172347312 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

172347312 is an abundant number, since it is smaller than the sum of its proper divisors (276981568).

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

172347312 is a wasteful number, since it uses less digits than its factorization.

172347312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33061 (or 33055 counting only the distinct ones).

The product of its digits is 7056, while the sum is 30.

The square root of 172347312 is about 13128.1115168938. Note that the first 3 decimals coincide. The cubic root of 172347312 is about 556.5038477449.

The spelling of 172347312 in words is "one hundred seventy-two million, three hundred forty-seven thousand, three hundred twelve".