102238173 has 16 divisors (see below), whose sum is σ = 151645440. Its totient is φ = 68077152.

The previous prime is 102238117. The next prime is 102238193. The reversal of 102238173 is 371832201.

It is not a de Polignac number, because 102238173 - 2²⁰ = 101189597 is a prime.

It is a Smith number, since the sum of its digits (27) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102238193) 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 15 ways as a sum of consecutive naturals, for example, 28065 + ... + 31497.

It is an arithmetic number, because the mean of its divisors is an integer number (9477840).

Almost surely, 2^102238173 is an apocalyptic number.

It is an amenable number.

102238173 is a deficient number, since it is larger than the sum of its proper divisors (49407267).

102238173 is a wasteful number, since it uses less digits than its factorization.

102238173 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4545 (or 4539 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 27.

The square root of 102238173 is about 10111.2893836543. The cubic root of 102238173 is about 467.5962576441.

The spelling of 102238173 in words is "one hundred two million, two hundred thirty-eight thousand, one hundred seventy-three".