18028858 has 8 divisors (see below), whose sum is σ = 27296352. Its totient is φ = 8930076.

The previous prime is 18028847. The next prime is 18028877. The reversal of 18028858 is 85882081.

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

It is a self number, because there is not a number n which added to its sum of digits gives 18028858.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 41910 + ... + 42337.

It is an arithmetic number, because the mean of its divisors is an integer number (3412044).

Almost surely, 2^18028858 is an apocalyptic number.

18028858 is a deficient number, since it is larger than the sum of its proper divisors (9267494).

18028858 is a wasteful number, since it uses less digits than its factorization.

18028858 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84356.

The product of its (nonzero) digits is 40960, while the sum is 40.

The square root of 18028858 is about 4246.0402730073. The cubic root of 18028858 is about 262.2141190028.

The spelling of 18028858 in words is "eighteen million, twenty-eight thousand, eight hundred fifty-eight".