18136028 has 6 divisors (see below), whose sum is σ = 31738056. Its totient is φ = 9068012.

The previous prime is 18136007. The next prime is 18136043. The reversal of 18136028 is 82063181.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2267000 + ... + 2267007.

It is an arithmetic number, because the mean of its divisors is an integer number (5289676).

Almost surely, 2^18136028 is an apocalyptic number.

It is an amenable number.

18136028 is a deficient number, since it is larger than the sum of its proper divisors (13602028).

18136028 is a wasteful number, since it uses less digits than its factorization.

18136028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4534011 (or 4534009 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 29.

The square root of 18136028 is about 4258.6415674485. The cubic root of 18136028 is about 262.7326578276.

The spelling of 18136028 in words is "eighteen million, one hundred thirty-six thousand, twenty-eight".