18898880 has 224 divisors, whose sum is σ = 61447680. Its totient is φ = 5345280.

The previous prime is 18898861. The next prime is 18898921. The reversal of 18898880 is 8889881.

It is a tau number, because it is divible by the number of its divisors (224).

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, 320291 + ... + 320349.

It is an arithmetic number, because the mean of its divisors is an integer number (274320).

Almost surely, 2^18898880 is an apocalyptic number.

18898880 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 18898880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30723840).

18898880 is an abundant number, since it is smaller than the sum of its proper divisors (42548800).

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

18898880 is a wasteful number, since it uses less digits than its factorization.

18898880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107 (or 97 counting only the distinct ones).

The product of its (nonzero) digits is 294912, while the sum is 50.

The square root of 18898880 is about 4347.2842097107. The cubic root of 18898880 is about 266.3659387655.

It can be divided in two parts, 18 and 898880, that added together give a palindrome (898898).

The spelling of 18898880 in words is "eighteen million, eight hundred ninety-eight thousand, eight hundred eighty".