18349028 has 12 divisors (see below), whose sum is σ = 32232060. Its totient is φ = 9139872.

The previous prime is 18349021. The next prime is 18349031. The reversal of 18349028 is 82094381.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 3541924 + 14807104 = 1882^2 + 3848^2 .

It is a hoax number, since the sum of its digits (35) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (18349021) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7451 + ... + 9602.

It is an arithmetic number, because the mean of its divisors is an integer number (2686005).

Almost surely, 2^18349028 is an apocalyptic number.

It is an amenable number.

18349028 is a deficient number, since it is larger than the sum of its proper divisors (13883032).

18349028 is a wasteful number, since it uses less digits than its factorization.

18349028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17326 (or 17324 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 35.

The square root of 18349028 is about 4283.5765430304. The cubic root of 18349028 is about 263.7572186430.

The spelling of 18349028 in words is "eighteen million, three hundred forty-nine thousand, twenty-eight".