3264880720 has 40 divisors (see below), whose sum is σ = 7594513920. Its totient is φ = 1305321600.

The previous prime is 3264880679. The next prime is 3264880727. The reversal of 3264880720 is 270884623.

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-2 number, since 2×3264880720² = 21318892231655436800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3264880727) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 179401 + ... + 196759.

It is an arithmetic number, because the mean of its divisors is an integer number (189862848).

Almost surely, 2^3264880720 is an apocalyptic number.

It is an amenable number.

3264880720 is an abundant number, since it is smaller than the sum of its proper divisors (4329633200).

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

3264880720 is a wasteful number, since it uses less digits than its factorization.

3264880720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19723 (or 19717 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 40.

The square root of 3264880720 is about 57139.1347501868. The cubic root of 3264880720 is about 1483.5053143466.

The spelling of 3264880720 in words is "three billion, two hundred sixty-four million, eight hundred eighty thousand, seven hundred twenty".