18028966 has 4 divisors (see below), whose sum is σ = 27043452. Its totient is φ = 9014482.

The previous prime is 18028951. The next prime is 18028973. The reversal of 18028966 is 66982081.

It is a semiprime because it is the product of two primes.

It is a congruent number.

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 as a sum of consecutive naturals, namely, 4507240 + ... + 4507243.

It is an arithmetic number, because the mean of its divisors is an integer number (6760863).

Almost surely, 2^18028966 is an apocalyptic number.

18028966 is a deficient number, since it is larger than the sum of its proper divisors (9014486).

18028966 is an equidigital number, since it uses as much as digits as its factorization.

18028966 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9014485.

The product of its (nonzero) digits is 41472, while the sum is 40.

The square root of 18028966 is about 4246.0529907197. The cubic root of 18028966 is about 262.2146425906.

The spelling of 18028966 in words is "eighteen million, twenty-eight thousand, nine hundred sixty-six".