18982560 has 96 divisors (see below), whose sum is σ = 60746112. Its totient is φ = 4981760.

The previous prime is 18982553. The next prime is 18982573. The reversal of 18982560 is 6528981.

It is a tau number, because it is divible by the number of its divisors (96).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33802 + ... + 34358.

It is an arithmetic number, because the mean of its divisors is an integer number (632772).

Almost surely, 2^18982560 is an apocalyptic number.

18982560 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 18982560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30373056).

18982560 is an abundant number, since it is smaller than the sum of its proper divisors (41763552).

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

18982560 is a wasteful number, since it uses less digits than its factorization.

18982560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 646 (or 638 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 39.

The square root of 18982560 is about 4356.8979790672. The cubic root of 18982560 is about 266.7584961517.

The spelling of 18982560 in words is "eighteen million, nine hundred eighty-two thousand, five hundred sixty".