7864637248 has 56 divisors (see below), whose sum is σ = 16877629440. Its totient is φ = 3614553600.

The previous prime is 7864637243. The next prime is 7864637251. The reversal of 7864637248 is 8427364687.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7864637243) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 179073 + ... + 218623.

It is an arithmetic number, because the mean of its divisors is an integer number (301386240).

Almost surely, 2^7864637248 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 7864637248, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8438814720).

7864637248 is an abundant number, since it is smaller than the sum of its proper divisors (9012992192).

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

7864637248 is a wasteful number, since it uses less digits than its factorization.

7864637248 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39815 (or 39805 counting only the distinct ones).

The product of its digits is 10838016, while the sum is 55.

The square root of 7864637248 is about 88682.7900327905. The cubic root of 7864637248 is about 1988.6555439918.

The spelling of 7864637248 in words is "seven billion, eight hundred sixty-four million, six hundred thirty-seven thousand, two hundred forty-eight".