18982656 has 216 divisors, whose sum is σ = 68874624. Its totient is φ = 4884480.

The previous prime is 18982643. The next prime is 18982657. The reversal of 18982656 is 65628981.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18982657) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 177355 + ... + 177461.

It is an arithmetic number, because the mean of its divisors is an integer number (318864).

Almost surely, 2^18982656 is an apocalyptic number.

18982656 is a gapful number since it is divisible by the number (16) 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 18982656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34437312).

18982656 is an abundant number, since it is smaller than the sum of its proper divisors (49891968).

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

18982656 is a wasteful number, since it uses less digits than its factorization.

18982656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147 (or 130 counting only the distinct ones).

The product of its digits is 207360, while the sum is 45.

The square root of 18982656 is about 4356.9089960659. The cubic root of 18982656 is about 266.7589458412.

It can be divided in two parts, 1898 and 2656, that added together give a palindrome (4554).

The spelling of 18982656 in words is "eighteen million, nine hundred eighty-two thousand, six hundred fifty-six".