172322280 has 96 divisors (see below), whose sum is σ = 603144360. Its totient is φ = 42416640.

The previous prime is 172322243. The next prime is 172322287. The reversal of 172322280 is 82223271.

It is a happy number.

172322280 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 92505924 + 79816356 = 9618^2 + 8934^2 .

It is not an unprimeable number, because it can be changed into a prime (172322287) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13731 + ... + 23090.

Almost surely, 2^172322280 is an apocalyptic number.

172322280 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

172322280 is an abundant number, since it is smaller than the sum of its proper divisors (430822080).

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

172322280 is a wasteful number, since it uses less digits than its factorization.

172322280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36851 (or 36844 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 27.

The square root of 172322280 is about 13127.1581082883. The cubic root of 172322280 is about 556.4769039366.

Subtracting from 172322280 its reverse (82223271), we obtain a palindrome (90099009).

The spelling of 172322280 in words is "one hundred seventy-two million, three hundred twenty-two thousand, two hundred eighty".