172016772 has 24 divisors (see below), whose sum is σ = 401666496. Its totient is φ = 57296928.

The previous prime is 172016749. The next prime is 172016869. The reversal of 172016772 is 277610271.

It is a happy number.

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, 14913 + ... + 23799.

It is an arithmetic number, because the mean of its divisors is an integer number (16736104).

Almost surely, 2^172016772 is an apocalyptic number.

172016772 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

172016772 is an abundant number, since it is smaller than the sum of its proper divisors (229649724).

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

172016772 is a wasteful number, since it uses less digits than its factorization.

172016772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10507 (or 10505 counting only the distinct ones).

The product of its (nonzero) digits is 8232, while the sum is 33.

The square root of 172016772 is about 13115.5164595223. The cubic root of 172016772 is about 556.1478524379.

The spelling of 172016772 in words is "one hundred seventy-two million, sixteen thousand, seven hundred seventy-two".