18079320 has 64 divisors (see below), whose sum is σ = 61989120. Its totient is φ = 4132224.

The previous prime is 18079301. The next prime is 18079343. The reversal of 18079320 is 2397081.

It is a happy number.

It is a hoax number, since the sum of its digits (30) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9922 + ... + 11601.

It is an arithmetic number, because the mean of its divisors is an integer number (968580).

Almost surely, 2^18079320 is an apocalyptic number.

18079320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18079320 is an abundant number, since it is smaller than the sum of its proper divisors (43909800).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18079320 is a wasteful number, since it uses less digits than its factorization.

18079320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21544 (or 21540 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 30.

The square root of 18079320 is about 4251.9783630682. The cubic root of 18079320 is about 262.4585331324.

The spelling of 18079320 in words is "eighteen million, seventy-nine thousand, three hundred twenty".