18079228 has 12 divisors (see below), whose sum is σ = 33499872. Its totient is φ = 8507840.

The previous prime is 18079207. The next prime is 18079249. The reversal of 18079228 is 82297081.

It is an interprime number because it is at equal distance from previous prime (18079207) and next prime (18079249).

It is a congruent 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, 132868 + ... + 133003.

It is an arithmetic number, because the mean of its divisors is an integer number (2791656).

Almost surely, 2^18079228 is an apocalyptic number.

It is an amenable number.

18079228 is a deficient number, since it is larger than the sum of its proper divisors (15420644).

18079228 is a wasteful number, since it uses less digits than its factorization.

18079228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 265892 (or 265890 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 37.

The square root of 18079228 is about 4251.9675445610. The cubic root of 18079228 is about 262.4580879419.

The spelling of 18079228 in words is "eighteen million, seventy-nine thousand, two hundred twenty-eight".