7648478420 has 96 divisors (see below), whose sum is σ = 18321811200. Its totient is φ = 2654812160.

The previous prime is 7648478417. The next prime is 7648478429. The reversal of 7648478420 is 248748467.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7648478429) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2999306 + ... + 3001854.

It is an arithmetic number, because the mean of its divisors is an integer number (190852200).

Almost surely, 2^7648478420 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 7648478420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9160905600).

7648478420 is an abundant number, since it is smaller than the sum of its proper divisors (10673332780).

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

7648478420 is a wasteful number, since it uses less digits than its factorization.

7648478420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3185 (or 3183 counting only the distinct ones).

The product of its (nonzero) digits is 2408448, while the sum is 50.

The square root of 7648478420 is about 87455.5796962092. The cubic root of 7648478420 is about 1970.2666906850.

The spelling of 7648478420 in words is "seven billion, six hundred forty-eight million, four hundred seventy-eight thousand, four hundred twenty".