3264391680 has 320 divisors, whose sum is σ = 12059549568. Its totient is φ = 744488960.

The previous prime is 3264391661. The next prime is 3264391693. The reversal of 3264391680 is 861934623.

It is a tau number, because it is divible by the number of its divisors (320).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1435024 + ... + 1437296.

Almost surely, 2^3264391680 is an apocalyptic number.

3264391680 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3264391680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6029774784).

3264391680 is an abundant number, since it is smaller than the sum of its proper divisors (8795157888).

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

3264391680 is a wasteful number, since it uses less digits than its factorization.

3264391680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2327 (or 2311 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 42.

The square root of 3264391680 is about 57134.8552111581. The cubic root of 3264391680 is about 1483.4312402095.

The spelling of 3264391680 in words is "three billion, two hundred sixty-four million, three hundred ninety-one thousand, six hundred eighty".