18028346 has 8 divisors (see below), whose sum is σ = 30905760. Its totient is φ = 7726428.

The previous prime is 18028337. The next prime is 18028357. The reversal of 18028346 is 64382081.

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

It is a Curzon 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, 643856 + ... + 643883.

It is an arithmetic number, because the mean of its divisors is an integer number (3863220).

Almost surely, 2^18028346 is an apocalyptic number.

18028346 is a deficient number, since it is larger than the sum of its proper divisors (12877414).

18028346 is a wasteful number, since it uses less digits than its factorization.

18028346 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1287748.

The product of its (nonzero) digits is 9216, while the sum is 32.

The square root of 18028346 is about 4245.9799811115. The cubic root of 18028346 is about 262.2116367805.

The spelling of 18028346 in words is "eighteen million, twenty-eight thousand, three hundred forty-six".