172216076 has 24 divisors (see below), whose sum is σ = 320166000. Its totient is φ = 80823744.

The previous prime is 172216061. The next prime is 172216081. The reversal of 172216076 is 670612271.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 2111 + ... + 18678.

It is an arithmetic number, because the mean of its divisors is an integer number (13340250).

Almost surely, 2^172216076 is an apocalyptic number.

It is an amenable number.

172216076 is a deficient number, since it is larger than the sum of its proper divisors (147949924).

172216076 is a wasteful number, since it uses less digits than its factorization.

172216076 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20921 (or 20919 counting only the distinct ones).

The product of its (nonzero) digits is 7056, while the sum is 32.

The square root of 172216076 is about 13123.1122832962. The cubic root of 172216076 is about 556.3625596227.

The spelling of 172216076 in words is "one hundred seventy-two million, two hundred sixteen thousand, seventy-six".