172606628 has 24 divisors (see below), whose sum is σ = 323719872. Its totient is φ = 80318304.

The previous prime is 172606613. The next prime is 172606639. The reversal of 172606628 is 826606271.

It is a happy number.

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 172606591 and 172606600.

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 in 7 ways as a sum of consecutive naturals, for example, 21950 + ... + 28757.

It is an arithmetic number, because the mean of its divisors is an integer number (13488328).

Almost surely, 2^172606628 is an apocalyptic number.

It is an amenable number.

172606628 is a deficient number, since it is larger than the sum of its proper divisors (151113244).

172606628 is a wasteful number, since it uses less digits than its factorization.

172606628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50771 (or 50769 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 38.

The square root of 172606628 is about 13137.9841680526. The cubic root of 172606628 is about 556.7828155134.

The spelling of 172606628 in words is "one hundred seventy-two million, six hundred six thousand, six hundred twenty-eight".