172224040 has 32 divisors (see below), whose sum is σ = 400869000. Its totient is φ = 66513664.

The previous prime is 172224001. The next prime is 172224053. The reversal of 172224040 is 40422271.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 123698884 + 48525156 = 11122^2 + 6966^2 .

It is a super-2 number, since 2×172224040² = 59322239907843200, which contains 22 as substring.

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 7 ways as a sum of consecutive naturals, for example, 73075 + ... + 75394.

Almost surely, 2^172224040 is an apocalyptic number.

172224040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

172224040 is an abundant number, since it is smaller than the sum of its proper divisors (228644960).

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

172224040 is a wasteful number, since it uses less digits than its factorization.

172224040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148509 (or 148505 counting only the distinct ones).

The product of its (nonzero) digits is 896, while the sum is 22.

The square root of 172224040 is about 13123.4157139062. The cubic root of 172224040 is about 556.3711356768.

The spelling of 172224040 in words is "one hundred seventy-two million, two hundred twenty-four thousand, forty".