18027860 has 24 divisors (see below), whose sum is σ = 39505536. Its totient is φ = 6897440.

The previous prime is 18027859. The next prime is 18027869. The reversal of 18027860 is 6872081.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18027869) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19136 + ... + 20055.

It is an arithmetic number, because the mean of its divisors is an integer number (1646064).

Almost surely, 2^18027860 is an apocalyptic number.

18027860 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18027860 is an abundant number, since it is smaller than the sum of its proper divisors (21477676).

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

18027860 is a wasteful number, since it uses less digits than its factorization.

18027860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39223 (or 39221 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 32.

The square root of 18027860 is about 4245.9227501216. The cubic root of 18027860 is about 262.2092805651.

The spelling of 18027860 in words is "eighteen million, twenty-seven thousand, eight hundred sixty".