3281297408 has 56 divisors (see below), whose sum is σ = 6591470688. Its totient is φ = 1633337344.

The previous prime is 3281297377. The next prime is 3281297419. The reversal of 3281297408 is 8047921823.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2153735 + ... + 2155257.

Almost surely, 2^3281297408 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3281297408, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3295735344).

3281297408 is an abundant number, since it is smaller than the sum of its proper divisors (3310173280).

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

3281297408 is an equidigital number, since it uses as much as digits as its factorization.

3281297408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1812 (or 1788 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 44.

The square root of 3281297408 is about 57282.6099964029. The cubic root of 3281297408 is about 1485.9876447138.

The spelling of 3281297408 in words is "three billion, two hundred eighty-one million, two hundred ninety-seven thousand, four hundred eight".