172612 has 12 divisors (see below), whose sum is σ = 329616. Its totient is φ = 78440.

The previous prime is 172607. The next prime is 172619. The reversal of 172612 is 216271.

It is a self number, because there is not a number n which added to its sum of digits gives 172612.

It is not an unprimeable number, because it can be changed into a prime (172619) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1918 + ... + 2005.

It is an arithmetic number, because the mean of its divisors is an integer number (27468).

2¹⁷²⁶¹² is an apocalyptic number.

It is an amenable number.

172612 is a deficient number, since it is larger than the sum of its proper divisors (157004).

172612 is a wasteful number, since it uses less digits than its factorization.

172612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3938 (or 3936 counting only the distinct ones).

The product of its digits is 168, while the sum is 19.

The square root of 172612 is about 415.4660034227. The cubic root of 172612 is about 55.6788591665.

Adding to 172612 its reverse (216271), we get a palindrome (388883).

It can be divided in two parts, 172 and 612, that added together give a square (784 = 28²).

The spelling of 172612 in words is "one hundred seventy-two thousand, six hundred twelve".