18077180 has 48 divisors (see below), whose sum is σ = 41803776. Its totient is φ = 6511680.

The previous prime is 18077177. The next prime is 18077183. The reversal of 18077180 is 8177081.

It is an interprime number because it is at equal distance from previous prime (18077177) and next prime (18077183).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18077183) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27617 + ... + 28263.

It is an arithmetic number, because the mean of its divisors is an integer number (870912).

Almost surely, 2^18077180 is an apocalyptic number.

18077180 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 18077180, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20901888).

18077180 is an abundant number, since it is smaller than the sum of its proper divisors (23726596).

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

18077180 is a wasteful number, since it uses less digits than its factorization.

18077180 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 794 (or 792 counting only the distinct ones).

The product of its (nonzero) digits is 3136, while the sum is 32.

The square root of 18077180 is about 4251.7267080564. The cubic root of 18077180 is about 262.4481772226.

Subtracting from 18077180 its reverse (8177081), we obtain a palindrome (9900099).

The spelling of 18077180 in words is "eighteen million, seventy-seven thousand, one hundred eighty".