18020294 has 8 divisors (see below), whose sum is σ = 27138888. Its totient is φ = 8974000.

The previous prime is 18020267. The next prime is 18020309. The reversal of 18020294 is 49202081.

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

It is a congruent number.

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, 17447 + ... + 18450.

It is an arithmetic number, because the mean of its divisors is an integer number (3392361).

Almost surely, 2^18020294 is an apocalyptic number.

18020294 is a deficient number, since it is larger than the sum of its proper divisors (9118594).

18020294 is a wasteful number, since it uses less digits than its factorization.

18020294 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36150.

The product of its (nonzero) digits is 1152, while the sum is 26.

The square root of 18020294 is about 4245.0316842163. The cubic root of 18020294 is about 262.1725937737.

The spelling of 18020294 in words is "eighteen million, twenty thousand, two hundred ninety-four".