2866321380 has 384 divisors, whose sum is σ = 9970974720. Its totient is φ = 607150080.

The previous prime is 2866321373. The next prime is 2866321427. The reversal of 2866321380 is 831236682.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is an unprimeable number.

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 127 ways as a sum of consecutive naturals, for example, 7809957 + ... + 7810323.

It is an arithmetic number, because the mean of its divisors is an integer number (25966080).

Almost surely, 2^2866321380 is an apocalyptic number.

2866321380 is a gapful number since it is divisible by the number (20) 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 2866321380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4985487360).

2866321380 is an abundant number, since it is smaller than the sum of its proper divisors (7104653340).

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

2866321380 is a wasteful number, since it uses less digits than its factorization.

2866321380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 459 (or 457 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 39.

The square root of 2866321380 is about 53538.0367589250. The cubic root of 2866321380 is about 1420.5012744558.

The spelling of 2866321380 in words is "two billion, eight hundred sixty-six million, three hundred twenty-one thousand, three hundred eighty".