18120254 has 8 divisors (see below), whose sum is σ = 27232248. Its totient is φ = 9042840.

The previous prime is 18120253. The next prime is 18120259. The reversal of 18120254 is 45202181.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18120253) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7292 + ... + 9455.

It is an arithmetic number, because the mean of its divisors is an integer number (3404031).

Almost surely, 2^18120254 is an apocalyptic number.

18120254 is a deficient number, since it is larger than the sum of its proper divisors (9111994).

18120254 is a wasteful number, since it uses less digits than its factorization.

18120254 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17290.

The product of its (nonzero) digits is 640, while the sum is 23.

The square root of 18120254 is about 4256.7891655566. The cubic root of 18120254 is about 262.6564642411.

The spelling of 18120254 in words is "eighteen million, one hundred twenty thousand, two hundred fifty-four".