18055860 has 24 divisors (see below), whose sum is σ = 50556576. Its totient is φ = 4814880.

The previous prime is 18055859. The next prime is 18055879. The reversal of 18055860 is 6855081.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 150406 + ... + 150525.

It is an arithmetic number, because the mean of its divisors is an integer number (2106524).

Almost surely, 2^18055860 is an apocalyptic number.

18055860 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18055860 is an abundant number, since it is smaller than the sum of its proper divisors (32500716).

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

18055860 is a wasteful number, since it uses less digits than its factorization.

18055860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 300943 (or 300941 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 33.

The square root of 18055860 is about 4249.2187517237. The cubic root of 18055860 is about 262.3449606019.

It can be divided in two parts, 18055 and 860, that added together give a triangular number (18915 = T₁₉₄).

The spelling of 18055860 in words is "eighteen million, fifty-five thousand, eight hundred sixty".