7738827280 has 20 divisors (see below), whose sum is σ = 17992773612. Its totient is φ = 3095530880.

The previous prime is 7738827263. The next prime is 7738827287. The reversal of 7738827280 is 827288377.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 2439569664 + 5299257616 = 49392^2 + 72796^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is not an unprimeable number, because it can be changed into a prime (7738827287) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 48367591 + ... + 48367750.

Almost surely, 2^7738827280 is an apocalyptic number.

It is an amenable number.

7738827280 is an abundant number, since it is smaller than the sum of its proper divisors (10253946332).

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

7738827280 is a wasteful number, since it uses less digits than its factorization.

7738827280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96735354 (or 96735348 counting only the distinct ones).

The product of its (nonzero) digits is 2107392, while the sum is 52.

The square root of 7738827280 is about 87970.6046358669. The cubic root of 7738827280 is about 1977.9943708236.

The spelling of 7738827280 in words is "seven billion, seven hundred thirty-eight million, eight hundred twenty-seven thousand, two hundred eighty".