3256461680 has 80 divisors (see below), whose sum is σ = 7984310400. Its totient is φ = 1231776000.

The previous prime is 3256461679. The next prime is 3256461697. The reversal of 3256461680 is 861646523.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1000055 + ... + 1003305.

It is an arithmetic number, because the mean of its divisors is an integer number (99803880).

Almost surely, 2^3256461680 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3256461680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3992155200).

3256461680 is an abundant number, since it is smaller than the sum of its proper divisors (4727848720).

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

3256461680 is a wasteful number, since it uses less digits than its factorization.

3256461680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3942 (or 3936 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 41.

The square root of 3256461680 is about 57065.4157962596. The cubic root of 3256461680 is about 1482.2290613331.

The spelling of 3256461680 in words is "three billion, two hundred fifty-six million, four hundred sixty-one thousand, six hundred eighty".