172274500 has 72 divisors (see below), whose sum is σ = 392825160. Its totient is φ = 65923200.

The previous prime is 172274483. The next prime is 172274561. The reversal of 172274500 is 5472271.

It can be written as a sum of positive squares in 12 ways, for example, as 85821696 + 86452804 = 9264^2 + 9298^2 .

It is a super-4 number, since 4×172274500⁴ (a number of 34 digits) contains 4444 as substring.

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1580446 + ... + 1580554.

It is an arithmetic number, because the mean of its divisors is an integer number (5455905).

Almost surely, 2^172274500 is an apocalyptic number.

172274500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 172274500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (196412580).

172274500 is an abundant number, since it is smaller than the sum of its proper divisors (220550660).

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

172274500 is a wasteful number, since it uses less digits than its factorization.

172274500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 266 (or 145 counting only the distinct ones).

The product of its (nonzero) digits is 3920, while the sum is 28.

The square root of 172274500 is about 13125.3380908836. The cubic root of 172274500 is about 556.4254675151.

The spelling of 172274500 in words is "one hundred seventy-two million, two hundred seventy-four thousand, five hundred".