172023612 has 24 divisors (see below), whose sum is σ = 425000016. Its totient is φ = 53968128.

The previous prime is 172023589. The next prime is 172023613. The reversal of 172023612 is 216320271.

172023612 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172023613) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 421423 + ... + 421830.

It is an arithmetic number, because the mean of its divisors is an integer number (17708334).

Almost surely, 2^172023612 is an apocalyptic number.

172023612 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

172023612 is an abundant number, since it is smaller than the sum of its proper divisors (252976404).

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

172023612 is a wasteful number, since it uses less digits than its factorization.

172023612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 843277 (or 843275 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 24.

The square root of 172023612 is about 13115.7772167722. Note that the first 3 decimals coincide. The cubic root of 172023612 is about 556.1552238138.

Adding to 172023612 its reverse (216320271), we get a palindrome (388343883).

The spelling of 172023612 in words is "one hundred seventy-two million, twenty-three thousand, six hundred twelve".