7748808256 has 84 divisors (see below), whose sum is σ = 18051894300. Its totient is φ = 3290305536.

The previous prime is 7748808251. The next prime is 7748808257. The reversal of 7748808256 is 6528088477.

It can be written as a sum of positive squares in 2 ways, for example, as 6693857856 + 1054950400 = 81816^2 + 32480^2 .

It is a junction number, because it is equal to n+sod(n) for n = 7748808197 and 7748808206.

It is not an unprimeable number, because it can be changed into a prime (7748808251) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 330490 + ... + 353158.

Almost surely, 2^7748808256 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 7748808256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9025947150).

7748808256 is an abundant number, since it is smaller than the sum of its proper divisors (10303086044).

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

7748808256 is a wasteful number, since it uses less digits than its factorization.

7748808256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22804 (or 22787 counting only the distinct ones).

The product of its (nonzero) digits is 6021120, while the sum is 55.

The square root of 7748808256 is about 88027.3153969835. The cubic root of 7748808256 is about 1978.8443632193.

The spelling of 7748808256 in words is "seven billion, seven hundred forty-eight million, eight hundred eight thousand, two hundred fifty-six".