172772423 has 8 divisors (see below), whose sum is σ = 178272192. Its totient is φ = 167348736.

The previous prime is 172772419. The next prime is 172772429. The reversal of 172772423 is 324277271.

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

It is a cyclic number.

It is not a de Polignac number, because 172772423 - 2² = 172772419 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172772429) 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, 14390 + ... + 23507.

It is an arithmetic number, because the mean of its divisors is an integer number (22284024).

Almost surely, 2^172772423 is an apocalyptic number.

172772423 is a deficient number, since it is larger than the sum of its proper divisors (5499769).

172772423 is an equidigital number, since it uses as much as digits as its factorization.

172772423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38041.

The product of its digits is 32928, while the sum is 35.

The square root of 172772423 is about 13144.2924115374. The cubic root of 172772423 is about 556.9610285740.

The spelling of 172772423 in words is "one hundred seventy-two million, seven hundred seventy-two thousand, four hundred twenty-three".