3291786880 has 64 divisors (see below), whose sum is σ = 7926256800. Its totient is φ = 1307206656.

The previous prime is 3291786833. The next prime is 3291786907. The reversal of 3291786880 is 886871923.

It is a tau number, because it is divible by the number of its divisors (64).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 70459 + ... + 107461.

Almost surely, 2^3291786880 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 3291786880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3963128400).

3291786880 is an abundant number, since it is smaller than the sum of its proper divisors (4634469920).

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

3291786880 is a wasteful number, since it uses less digits than its factorization.

3291786880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37161 (or 37149 counting only the distinct ones).

The product of its (nonzero) digits is 1161216, while the sum is 52.

The square root of 3291786880 is about 57374.0958970161. The cubic root of 3291786880 is about 1487.5694017474.

The spelling of 3291786880 in words is "three billion, two hundred ninety-one million, seven hundred eighty-six thousand, eight hundred eighty".