18079140 has 24 divisors (see below), whose sum is σ = 50621760. Its totient is φ = 4821088.

The previous prime is 18079129. The next prime is 18079147. The reversal of 18079140 is 4197081.

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

It is a junction number, because it is equal to n+sod(n) for n = 18079098 and 18079107.

It is not an unprimeable number, because it can be changed into a prime (18079147) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 150600 + ... + 150719.

It is an arithmetic number, because the mean of its divisors is an integer number (2109240).

Almost surely, 2^18079140 is an apocalyptic number.

18079140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18079140 is an abundant number, since it is smaller than the sum of its proper divisors (32542620).

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

18079140 is a wasteful number, since it uses less digits than its factorization.

18079140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 301331 (or 301329 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 30.

The square root of 18079140 is about 4251.9571963979. The cubic root of 18079140 is about 262.4576621060.

The spelling of 18079140 in words is "eighteen million, seventy-nine thousand, one hundred forty".