3266647920 has 240 divisors, whose sum is σ = 11954874720. Its totient is φ = 819707904.

The previous prime is 3266647919. The next prime is 3266647939. The reversal of 3266647920 is 297466623.

It is a tau number, because it is divible by the number of its divisors (240).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 621624 + ... + 626856.

It is an arithmetic number, because the mean of its divisors is an integer number (49811978).

Almost surely, 2^3266647920 is an apocalyptic number.

3266647920 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 3266647920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5977437360).

3266647920 is an abundant number, since it is smaller than the sum of its proper divisors (8688226800).

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

3266647920 is a wasteful number, since it uses less digits than its factorization.

3266647920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5289 (or 5260 counting only the distinct ones).

The product of its (nonzero) digits is 653184, while the sum is 45.

The square root of 3266647920 is about 57154.5966655351. The cubic root of 3266647920 is about 1483.7729277702.

The spelling of 3266647920 in words is "three billion, two hundred sixty-six million, six hundred forty-seven thousand, nine hundred twenty".