18120274 has 8 divisors (see below), whose sum is σ = 28362240. Its totient is φ = 8666196.

The previous prime is 18120259. The next prime is 18120287. The reversal of 18120274 is 47202181.

It is a happy number.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 196914 + ... + 197005.

It is an arithmetic number, because the mean of its divisors is an integer number (3545280).

Almost surely, 2^18120274 is an apocalyptic number.

18120274 is a deficient number, since it is larger than the sum of its proper divisors (10241966).

18120274 is a wasteful number, since it uses less digits than its factorization.

18120274 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 393944.

The product of its (nonzero) digits is 896, while the sum is 25.

The square root of 18120274 is about 4256.7915147444. The cubic root of 18120274 is about 262.6565608756.

The spelling of 18120274 in words is "eighteen million, one hundred twenty thousand, two hundred seventy-four".