3221120784 has 80 divisors (see below), whose sum is σ = 9517640832. Its totient is φ = 919578624.

The previous prime is 3221120759. The next prime is 3221120869. The reversal of 3221120784 is 4870211223.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 518722 + ... + 524894.

Almost surely, 2^3221120784 is an apocalyptic number.

It is an amenable number.

3221120784 is an abundant number, since it is smaller than the sum of its proper divisors (6296520048).

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

3221120784 is a wasteful number, since it uses less digits than its factorization.

3221120784 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7744 (or 7738 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 30.

The square root of 3221120784 is about 56754.9185886122. The cubic root of 3221120784 is about 1476.8475607456.

The spelling of 3221120784 in words is "three billion, two hundred twenty-one million, one hundred twenty thousand, seven hundred eighty-four".