18076140 has 72 divisors (see below), whose sum is σ = 55194048. Its totient is φ = 4788480.

The previous prime is 18076139. The next prime is 18076171. The reversal of 18076140 is 4167081.

It is a happy 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 23 ways as a sum of consecutive naturals, for example, 41725 + ... + 42155.

It is an arithmetic number, because the mean of its divisors is an integer number (766584).

Almost surely, 2^18076140 is an apocalyptic number.

18076140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18076140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27597024).

18076140 is an abundant number, since it is smaller than the sum of its proper divisors (37117908).

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

18076140 is a wasteful number, since it uses less digits than its factorization.

18076140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 679 (or 674 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 27.

The square root of 18076140 is about 4251.6044030460. The cubic root of 18076140 is about 262.4431441489.

The spelling of 18076140 in words is "eighteen million, seventy-six thousand, one hundred forty".