3281868 has 18 divisors (see below), whose sum is σ = 8295924. Its totient is φ = 1093944.

The previous prime is 3281857. The next prime is 3281909. The reversal of 3281868 is 8681823.

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 91163 = 3281868 / (3 + 2 + 8 + 1 + 8 + 6 + 8).

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, 45546 + ... + 45617.

Almost surely, 2^3281868 is an apocalyptic number.

It is an amenable number.

3281868 is an abundant number, since it is smaller than the sum of its proper divisors (5014056).

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

3281868 is a wasteful number, since it uses less digits than its factorization.

3281868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91173 (or 91168 counting only the distinct ones).

The product of its digits is 18432, while the sum is 36.

The square root of 3281868 is about 1811.5926694486. The cubic root of 3281868 is about 148.6073773605.

The spelling of 3281868 in words is "three million, two hundred eighty-one thousand, eight hundred sixty-eight".