172227120 has 80 divisors (see below), whose sum is σ = 574984032. Its totient is φ = 42393600.

The previous prime is 172227091. The next prime is 172227131. The reversal of 172227120 is 21722271.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 24481 + ... + 30720.

Almost surely, 2^172227120 is an apocalyptic number.

172227120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

172227120 is an abundant number, since it is smaller than the sum of its proper divisors (402756912).

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

172227120 is a wasteful number, since it uses less digits than its factorization.

172227120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55230 (or 55224 counting only the distinct ones).

The product of its (nonzero) digits is 784, while the sum is 24.

The square root of 172227120 is about 13123.5330608796. The cubic root of 172227120 is about 556.3744523119.

Adding to 172227120 its reverse (21722271), we get a palindrome (193949391).

It can be divided in two parts, 17222 and 7120, that added together give a palindrome (24342).

The spelling of 172227120 in words is "one hundred seventy-two million, two hundred twenty-seven thousand, one hundred twenty".