3278428320 has 96 divisors (see below), whose sum is σ = 10418611392. Its totient is φ = 866496512.

The previous prime is 3278428273. The next prime is 3278428331. The reversal of 3278428320 is 238248723.

It is a tau number, because it is divible by the number of its divisors (96).

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, 24019 + ... + 84461.

It is an arithmetic number, because the mean of its divisors is an integer number (108527202).

Almost surely, 2^3278428320 is an apocalyptic number.

3278428320 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 3278428320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5209305696).

3278428320 is an abundant number, since it is smaller than the sum of its proper divisors (7140183072).

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

3278428320 is a wasteful number, since it uses less digits than its factorization.

3278428320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60574 (or 60566 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 39.

The square root of 3278428320 is about 57257.5612474021. The cubic root of 3278428320 is about 1485.5544143980.

The spelling of 3278428320 in words is "three billion, two hundred seventy-eight million, four hundred twenty-eight thousand, three hundred twenty".