18666960 has 160 divisors (see below), whose sum is σ = 64662528. Its totient is φ = 4423680.

The previous prime is 18666941. The next prime is 18666983. The reversal of 18666960 is 6966681.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 96624 + ... + 96816.

Almost surely, 2^18666960 is an apocalyptic number.

18666960 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 18666960, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32331264).

18666960 is an abundant number, since it is smaller than the sum of its proper divisors (45995568).

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

18666960 is a wasteful number, since it uses less digits than its factorization.

18666960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 253 (or 247 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 42.

The square root of 18666960 is about 4320.5277455422. The cubic root of 18666960 is about 265.2718700312.

The spelling of 18666960 in words is "eighteen million, six hundred sixty-six thousand, nine hundred sixty".