173222440 has 24 divisors (see below), whose sum is σ = 389937870. Its totient is φ = 69255680.

The previous prime is 173222383. The next prime is 173222443. The reversal of 173222440 is 44222371.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 120253156 + 52969284 = 10966^2 + 7278^2 .

It is not an unprimeable number, because it can be changed into a prime (173222443) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 82200 + ... + 84280.

Almost surely, 2^173222440 is an apocalyptic number.

173222440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

173222440 is an abundant number, since it is smaller than the sum of its proper divisors (216715430).

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

173222440 is an frugal number, since it uses more digits than its factorization.

173222440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4173 (or 2088 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 25.

The square root of 173222440 is about 13161.3996216208. The cubic root of 173222440 is about 557.4441778852. Note that the first 3 decimals are identical.

The spelling of 173222440 in words is "one hundred seventy-three million, two hundred twenty-two thousand, four hundred forty".