18173230 has 16 divisors (see below), whose sum is σ = 32768064. Its totient is φ = 7256800.

The previous prime is 18173203. The next prime is 18173251. The reversal of 18173230 is 3237181.

It is a junction number, because it is equal to n+sod(n) for n = 18173195 and 18173204.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6555 + ... + 8905.

It is an arithmetic number, because the mean of its divisors is an integer number (2048004).

Almost surely, 2^18173230 is an apocalyptic number.

18173230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18173230 is a deficient number, since it is larger than the sum of its proper divisors (14594834).

18173230 is a wasteful number, since it uses less digits than its factorization.

18173230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3131.

The product of its (nonzero) digits is 1008, while the sum is 25.

The square root of 18173230 is about 4263.0071545800. The cubic root of 18173230 is about 262.9121808698.

The spelling of 18173230 in words is "eighteen million, one hundred seventy-three thousand, two hundred thirty".