172704226323204 has 81 divisors (see below), whose sum is σ = 452136706553077. Its totient is φ = 55582233456288.

The previous prime is 172704226323157. The next prime is 172704226323319. The reversal of 172704226323204 is 402323622407271.

The square root of 172704226323204 is 13141698.

It is a perfect power (a square), and thus also a powerful number.

172704226323204 is a `hidden beast` number, since 1 + 7 + 2 + 7 + 0 + 4 + 2 + 2 + 632 + 3 + 2 + 0 + 4 = 666.

It can be written as a sum of positive squares in only one way, i.e., 90561907025604 + 82142319297600 = 9516402^2 + 9063240^2 .

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 172704226323204.

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 2286617689 + ... + 2286693215.

Almost surely, 2^{172704226323204} is an apocalyptic number.

172704226323204 is the 13141698-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 172704226323204

172704226323204 is an abundant number, since it is smaller than the sum of its proper divisors (279432480229873).

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

172704226323204 is an frugal number, since it uses more digits than its factorization.

172704226323204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151122 (or 75561 counting only the distinct ones).

The product of its (nonzero) digits is 1354752, while the sum is 45.

The spelling of 172704226323204 in words is "one hundred seventy-two trillion, seven hundred four billion, two hundred twenty-six million, three hundred twenty-three thousand, two hundred four".