18882882 has 40 divisors (see below), whose sum is σ = 42579900. Its totient is φ = 6254496.

The previous prime is 18882841. The next prime is 18882883. The reversal of 18882882 is 28828881.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 15610401 + 3272481 = 3951^2 + 1809^2 .

It is not an unprimeable number, because it can be changed into a prime (18882883) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 36844 + ... + 37352.

Almost surely, 2^18882882 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18882882, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21289950).

18882882 is an abundant number, since it is smaller than the sum of its proper divisors (23697018).

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

18882882 is a wasteful number, since it uses less digits than its factorization.

18882882 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 752 (or 743 counting only the distinct ones).

The product of its digits is 131072, while the sum is 45.

The square root of 18882882 is about 4345.4438208312. The cubic root of 18882882 is about 266.2907574979.

The spelling of 18882882 in words is "eighteen million, eight hundred eighty-two thousand, eight hundred eighty-two".