173003920 has 20 divisors (see below), whose sum is σ = 402234300. Its totient is φ = 69201536.

The previous prime is 173003903. The next prime is 173003923. The reversal of 173003920 is 29300371.

It can be written as a sum of positive squares in 2 ways, for example, as 101364624 + 71639296 = 10068^2 + 8464^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is not an unprimeable number, because it can be changed into a prime (173003923) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 1081195 + ... + 1081354.

It is an arithmetic number, because the mean of its divisors is an integer number (20111715).

Almost surely, 2^173003920 is an apocalyptic number.

173003920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

173003920 is an abundant number, since it is smaller than the sum of its proper divisors (229230380).

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

173003920 is a wasteful number, since it uses less digits than its factorization.

173003920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2162562 (or 2162556 counting only the distinct ones).

The product of its (nonzero) digits is 1134, while the sum is 25.

The square root of 173003920 is about 13153.0954531623. The cubic root of 173003920 is about 557.2096740878.

The spelling of 173003920 in words is "one hundred seventy-three million, three thousand, nine hundred twenty".