172047746 has 24 divisors (see below), whose sum is σ = 280273284. Its totient is φ = 79173120.

The previous prime is 172047721. The next prime is 172047763. The reversal of 172047746 is 647740271.

It can be written as a sum of positive squares in 6 ways, for example, as 46854025 + 125193721 = 6845^2 + 11189^2 .

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 11 ways as a sum of consecutive naturals, for example, 175610 + ... + 176586.

Almost surely, 2^172047746 is an apocalyptic number.

172047746 is a deficient number, since it is larger than the sum of its proper divisors (108225538).

172047746 is a wasteful number, since it uses less digits than its factorization.

172047746 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1526 (or 1513 counting only the distinct ones).

The product of its (nonzero) digits is 65856, while the sum is 38.

The square root of 172047746 is about 13116.6972214807. The cubic root of 172047746 is about 556.1812311400.

The spelling of 172047746 in words is "one hundred seventy-two million, forty-seven thousand, seven hundred forty-six".