18914880 has 224 divisors, whose sum is σ = 68031360. Its totient is φ = 4423680.

The previous prime is 18914851. The next prime is 18914893. The reversal of 18914880 is 8841981.

It is a happy 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, 310050 + ... + 310110.

Almost surely, 2^18914880 is an apocalyptic number.

18914880 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 18914880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34015680).

18914880 is an abundant number, since it is smaller than the sum of its proper divisors (49116480).

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

18914880 is a wasteful number, since it uses less digits than its factorization.

18914880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117 (or 107 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 39.

The square root of 18914880 is about 4349.1240497369. The cubic root of 18914880 is about 266.4410870084.

The spelling of 18914880 in words is "eighteen million, nine hundred fourteen thousand, eight hundred eighty".