18480660 has 48 divisors (see below), whose sum is σ = 56452032. Its totient is φ = 4480000.

The previous prime is 18480647. The next prime is 18480691. The reversal of 18480660 is 6608481.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent 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 15 ways as a sum of consecutive naturals, for example, 13341 + ... + 14660.

It is an arithmetic number, because the mean of its divisors is an integer number (1176084).

Almost surely, 2^18480660 is an apocalyptic number.

18480660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18480660 is an abundant number, since it is smaller than the sum of its proper divisors (37971372).

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

18480660 is a wasteful number, since it uses less digits than its factorization.

18480660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28024 (or 28022 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 33.

The square root of 18480660 is about 4298.9138163029. The cubic root of 18480660 is about 264.3864290394.

The spelling of 18480660 in words is "eighteen million, four hundred eighty thousand, six hundred sixty".