173426913 has 48 divisors (see below), whose sum is σ = 286977600. Its totient is φ = 103926240.

The previous prime is 173426893. The next prime is 173426917. The reversal of 173426913 is 319624371.

It is not a de Polignac number, because 173426913 - 2⁶ = 173426849 is a prime.

It is not an unprimeable number, because it can be changed into a prime (173426917) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1948573 + ... + 1948661.

It is an arithmetic number, because the mean of its divisors is an integer number (5978700).

Almost surely, 2^173426913 is an apocalyptic number.

It is an amenable number.

173426913 is a deficient number, since it is larger than the sum of its proper divisors (113550687).

173426913 is an frugal number, since it uses more digits than its factorization.

173426913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133 (or 103 counting only the distinct ones).

The product of its digits is 27216, while the sum is 36.

The square root of 173426913 is about 13169.1652355037. The cubic root of 173426913 is about 557.6634286633.

The spelling of 173426913 in words is "one hundred seventy-three million, four hundred twenty-six thousand, nine hundred thirteen".