3207778860 has 144 divisors (see below), whose sum is σ = 10610369280. Its totient is φ = 717799680.

The previous prime is 3207778859. The next prime is 3207778867. The reversal of 3207778860 is 688777023.

It is not an unprimeable number, because it can be changed into a prime (3207778867) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 97161 + ... + 125919.

It is an arithmetic number, because the mean of its divisors is an integer number (73683120).

Almost surely, 2^3207778860 is an apocalyptic number.

3207778860 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 3207778860, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5305184640).

3207778860 is an abundant number, since it is smaller than the sum of its proper divisors (7402590420).

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

3207778860 is a wasteful number, since it uses less digits than its factorization.

3207778860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28808 (or 28793 counting only the distinct ones).

The product of its (nonzero) digits is 790272, while the sum is 48.

The square root of 3207778860 is about 56637.2568191645. The cubic root of 3207778860 is about 1474.8056984315.

The spelling of 3207778860 in words is "three billion, two hundred seven million, seven hundred seventy-eight thousand, eight hundred sixty".