172806072 has 16 divisors (see below), whose sum is σ = 432015240. Its totient is φ = 57602016.

The previous prime is 172806047. The next prime is 172806079. The reversal of 172806072 is 270608271.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172806079) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3600103 + ... + 3600150.

Almost surely, 2^172806072 is an apocalyptic number.

172806072 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

172806072 is an abundant number, since it is smaller than the sum of its proper divisors (259209168).

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

172806072 is a wasteful number, since it uses less digits than its factorization.

172806072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7200262 (or 7200258 counting only the distinct ones).

The product of its (nonzero) digits is 9408, while the sum is 33.

The square root of 172806072 is about 13145.5723344402. The cubic root of 172806072 is about 556.9971839681.

The spelling of 172806072 in words is "one hundred seventy-two million, eight hundred six thousand, seventy-two".