2868387840 has 336 divisors, whose sum is σ = 10304775936. Its totient is φ = 737280000.

The previous prime is 2868387833. The next prime is 2868387869. The reversal of 2868387840 is 487838682.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11427715 + ... + 11427965.

It is an arithmetic number, because the mean of its divisors is an integer number (30668976).

Almost surely, 2^2868387840 is an apocalyptic number.

2868387840 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 2868387840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5152387968).

2868387840 is an abundant number, since it is smaller than the sum of its proper divisors (7436388096).

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

2868387840 is a wasteful number, since it uses less digits than its factorization.

2868387840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 319 (or 292 counting only the distinct ones).

The product of its (nonzero) digits is 4128768, while the sum is 54.

The square root of 2868387840 is about 53557.3322711279. The cubic root of 2868387840 is about 1420.8425602055.

The spelling of 2868387840 in words is "two billion, eight hundred sixty-eight million, three hundred eighty-seven thousand, eight hundred forty".