7866282440 has 128 divisors (see below), whose sum is σ = 18779040000. Its totient is φ = 2959638528.

The previous prime is 7866282409. The next prime is 7866282469. The reversal of 7866282440 is 442826687.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 17519336 + ... + 17519784.

It is an arithmetic number, because the mean of its divisors is an integer number (146711250).

Almost surely, 2^7866282440 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7866282440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9389520000).

7866282440 is an abundant number, since it is smaller than the sum of its proper divisors (10912757560).

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

7866282440 is a wasteful number, since it uses less digits than its factorization.

7866282440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 759 (or 755 counting only the distinct ones).

The product of its (nonzero) digits is 1032192, while the sum is 47.

The square root of 7866282440 is about 88692.0652595259. The cubic root of 7866282440 is about 1988.7942023083.

The spelling of 7866282440 in words is "seven billion, eight hundred sixty-six million, two hundred eighty-two thousand, four hundred forty".