7878047824 has 20 divisors (see below), whose sum is σ = 16067071840. Its totient is φ = 3731706720.

The previous prime is 7878047789. The next prime is 7878047861. The reversal of 7878047824 is 4287408787.

It is a super-2 number, since 2×7878047824² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12957012 + ... + 12957619.

It is an arithmetic number, because the mean of its divisors is an integer number (803353592).

Almost surely, 2^7878047824 is an apocalyptic number.

It is an amenable number.

7878047824 is an abundant number, since it is smaller than the sum of its proper divisors (8189024016).

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

7878047824 is a wasteful number, since it uses less digits than its factorization.

7878047824 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25914658 (or 25914652 counting only the distinct ones).

The product of its (nonzero) digits is 5619712, while the sum is 55.

The square root of 7878047824 is about 88758.3676280721. The cubic root of 7878047824 is about 1989.7852367915.

The spelling of 7878047824 in words is "seven billion, eight hundred seventy-eight million, forty-seven thousand, eight hundred twenty-four".