3220862720 has 36 divisors (see below), whose sum is σ = 7714975800. Its totient is φ = 1288344576.

The previous prime is 3220862719. The next prime is 3220862731. The reversal of 3220862720 is 272680223.

It is a super-2 number, since 2×3220862720² = 20747913322171596800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1256870 + ... + 1259429.

Almost surely, 2^3220862720 is an apocalyptic number.

It is an amenable number.

3220862720 is an abundant number, since it is smaller than the sum of its proper divisors (4494113080).

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

3220862720 is an equidigital number, since it uses as much as digits as its factorization.

3220862720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2516320 (or 2516306 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 32.

The square root of 3220862720 is about 56752.6450484909. The cubic root of 3220862720 is about 1476.8081198808.

The spelling of 3220862720 in words is "three billion, two hundred twenty million, eight hundred sixty-two thousand, seven hundred twenty".