172112700 has 72 divisors (see below), whose sum is σ = 500523520. Its totient is φ = 45662400.

The previous prime is 172112653. The next prime is 172112729. The reversal of 172112700 is 7211271.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 61941 + ... + 64659.

Almost surely, 2^172112700 is an apocalyptic number.

172112700 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 172112700, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (250261760).

172112700 is an abundant number, since it is smaller than the sum of its proper divisors (328410820).

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

172112700 is a wasteful number, since it uses less digits than its factorization.

172112700 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2947 (or 2940 counting only the distinct ones).

The product of its (nonzero) digits is 196, while the sum is 21.

The square root of 172112700 is about 13119.1729922278. The cubic root of 172112700 is about 556.2512149113.

Adding to 172112700 its reverse (7211271), we get a palindrome (179323971).

The spelling of 172112700 in words is "one hundred seventy-two million, one hundred twelve thousand, seven hundred".