3205860720 has 40 divisors (see below), whose sum is σ = 9938168976. Its totient is φ = 854896128.

The previous prime is 3205860719. The next prime is 3205860769. The reversal of 3205860720 is 270685023.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6678637 + ... + 6679116.

Almost surely, 2^3205860720 is an apocalyptic number.

3205860720 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

3205860720 is an abundant number, since it is smaller than the sum of its proper divisors (6732308256).

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

3205860720 is a wasteful number, since it uses less digits than its factorization.

3205860720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13357769 (or 13357763 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 33.

The square root of 3205860720 is about 56620.3207338143. The cubic root of 3205860720 is about 1474.5116790106.

The spelling of 3205860720 in words is "three billion, two hundred five million, eight hundred sixty thousand, seven hundred twenty".