18968880 has 120 divisors (see below), whose sum is σ = 68446512. Its totient is φ = 4333056.

The previous prime is 18968861. The next prime is 18968881. The reversal of 18968880 is 8886981.

It is a tau number, because it is divible by the number of its divisors (120).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is not an unprimeable number, because it can be changed into a prime (18968881) 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, 10954 + ... + 12566.

Almost surely, 2^18968880 is an apocalyptic number.

18968880 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 18968880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34223256).

18968880 is an abundant number, since it is smaller than the sum of its proper divisors (49477632).

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

18968880 is a wasteful number, since it uses less digits than its factorization.

18968880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1643 (or 1630 counting only the distinct ones).

The product of its (nonzero) digits is 221184, while the sum is 48.

The square root of 18968880 is about 4355.3277718215. The cubic root of 18968880 is about 266.6943998934.

The spelling of 18968880 in words is "eighteen million, nine hundred sixty-eight thousand, eight hundred eighty".