3280637680 has 20 divisors (see below), whose sum is σ = 7627482792. Its totient is φ = 1312255040.

The previous prime is 3280637677. The next prime is 3280637693. The reversal of 3280637680 is 867360823.

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20503906 + ... + 20504065.

Almost surely, 2^3280637680 is an apocalyptic number.

It is an amenable number.

3280637680 is an abundant number, since it is smaller than the sum of its proper divisors (4346845112).

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

3280637680 is a wasteful number, since it uses less digits than its factorization.

3280637680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41007984 (or 41007978 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 43.

The square root of 3280637680 is about 57276.8511704336. The cubic root of 3280637680 is about 1485.8880486045. Note that the first 3 decimals are identical.

The spelling of 3280637680 in words is "three billion, two hundred eighty million, six hundred thirty-seven thousand, six hundred eighty".