173223990 has 48 divisors (see below), whose sum is σ = 451206288. Its totient is φ = 46108608.

The previous prime is 173223983. The next prime is 173224003. The reversal of 173223990 is 99322371.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 59509 + ... + 62351.

It is an arithmetic number, because the mean of its divisors is an integer number (9400131).

Almost surely, 2^173223990 is an apocalyptic number.

173223990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

173223990 is an abundant number, since it is smaller than the sum of its proper divisors (277982298).

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

173223990 is a wasteful number, since it uses less digits than its factorization.

173223990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3533 (or 3530 counting only the distinct ones).

The product of its (nonzero) digits is 20412, while the sum is 36.

The square root of 173223990 is about 13161.4585058040. The cubic root of 173223990 is about 557.4458405564.

It can be divided in two parts, 17322 and 3990, that added together give a palindrome (21312).

The spelling of 173223990 in words is "one hundred seventy-three million, two hundred twenty-three thousand, nine hundred ninety".