2981808 has 30 divisors (see below), whose sum is σ = 8345324. Its totient is φ = 993888.

The previous prime is 2981779. The next prime is 2981819. The reversal of 2981808 is 8081892.

2981808 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nialpdrome in base 12.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 10210 + ... + 10497.

2^2981808 is an apocalyptic number.

It is an amenable number.

2981808 is an abundant number, since it is smaller than the sum of its proper divisors (5363516).

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

2981808 is a wasteful number, since it uses less digits than its factorization.

2981808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20721 (or 20712 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 36.

The square root of 2981808 is about 1726.7912438972. The cubic root of 2981808 is about 143.9328390517.

2981808 divided by its sum of digits (36) gives a palindrome (82828).

The spelling of 2981808 in words is "two million, nine hundred eighty-one thousand, eight hundred eight".