7678342720 has 28 divisors (see below), whose sum is σ = 18284054364. Its totient is φ = 3071336960.

The previous prime is 7678342667. The next prime is 7678342733. The reversal of 7678342720 is 272438767.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 977937984 + 6700404736 = 31272^2 + 81856^2 .

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, 11997091 + ... + 11997730.

Almost surely, 2^7678342720 is an apocalyptic number.

It is an amenable number.

7678342720 is an abundant number, since it is smaller than the sum of its proper divisors (10605711644).

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

7678342720 is a wasteful number, since it uses less digits than its factorization.

7678342720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23994838 (or 23994828 counting only the distinct ones).

The product of its (nonzero) digits is 790272, while the sum is 46.

The square root of 7678342720 is about 87626.1531735817. The cubic root of 7678342720 is about 1972.8277324513.

The spelling of 7678342720 in words is "seven billion, six hundred seventy-eight million, three hundred forty-two thousand, seven hundred twenty".