172444660 has 48 divisors (see below), whose sum is σ = 369847296. Its totient is φ = 67525632.

The previous prime is 172444637. The next prime is 172444691. The reversal of 172444660 is 66444271.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 199389 + ... + 200251.

It is an arithmetic number, because the mean of its divisors is an integer number (7705152).

Almost surely, 2^172444660 is an apocalyptic number.

172444660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

172444660 is an abundant number, since it is smaller than the sum of its proper divisors (197402636).

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

172444660 is a wasteful number, since it uses less digits than its factorization.

172444660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1072 (or 1070 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 34.

The square root of 172444660 is about 13131.8186097737. The cubic root of 172444660 is about 556.6086058623.

It can be divided in two parts, 17244 and 4660, that added together give a square (21904 = 148²).

The spelling of 172444660 in words is "one hundred seventy-two million, four hundred forty-four thousand, six hundred sixty".