172122716 has 6 divisors (see below), whose sum is σ = 301214760. Its totient is φ = 86061356.

The previous prime is 172122701. The next prime is 172122733. The reversal of 172122716 is 617221271.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21515336 + ... + 21515343.

It is an arithmetic number, because the mean of its divisors is an integer number (50202460).

Almost surely, 2^172122716 is an apocalyptic number.

It is an amenable number.

172122716 is a deficient number, since it is larger than the sum of its proper divisors (129092044).

172122716 is a wasteful number, since it uses less digits than its factorization.

172122716 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43030683 (or 43030681 counting only the distinct ones).

The product of its digits is 2352, while the sum is 29.

The square root of 172122716 is about 13119.5547180535. The cubic root of 172122716 is about 556.2620049423.

Adding to 172122716 its reverse (617221271), we get a palindrome (789343987).

The spelling of 172122716 in words is "one hundred seventy-two million, one hundred twenty-two thousand, seven hundred sixteen".