172433623 has 8 divisors (see below), whose sum is σ = 178736400. Its totient is φ = 166154688.

The previous prime is 172433621. The next prime is 172433629. The reversal of 172433623 is 326334271.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 172433623 - 2¹ = 172433621 is a prime.

It is a super-2 number, since 2×172433623² = 59466708681812258, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172433621) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 9483 + ... + 20851.

It is an arithmetic number, because the mean of its divisors is an integer number (22342050).

Almost surely, 2^172433623 is an apocalyptic number.

172433623 is a deficient number, since it is larger than the sum of its proper divisors (6302777).

172433623 is a wasteful number, since it uses less digits than its factorization.

172433623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11921.

The product of its digits is 18144, while the sum is 31.

The square root of 172433623 is about 13131.3983642261. The cubic root of 172433623 is about 556.5967307091.

Adding to 172433623 its reverse (326334271), we get a palindrome (498767894).

It can be divided in two parts, 172433 and 623, that added together give a square (173056 = 416²).

The spelling of 172433623 in words is "one hundred seventy-two million, four hundred thirty-three thousand, six hundred twenty-three".