7728837380 has 48 divisors (see below), whose sum is σ = 17770124736. Its totient is φ = 2800318080.

The previous prime is 7728837373. The next prime is 7728837427. The reversal of 7728837380 is 837388277.

It is a Smith number, since the sum of its digits (53) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2474 + ... + 124353.

It is an arithmetic number, because the mean of its divisors is an integer number (370210932).

Almost surely, 2^7728837380 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 7728837380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8885062368).

7728837380 is an abundant number, since it is smaller than the sum of its proper divisors (10041287356).

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

7728837380 is a wasteful number, since it uses less digits than its factorization.

7728837380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127124 (or 127122 counting only the distinct ones).

The product of its (nonzero) digits is 3161088, while the sum is 53.

The square root of 7728837380 is about 87913.8065379949. The cubic root of 7728837380 is about 1977.1428863141.

The spelling of 7728837380 in words is "seven billion, seven hundred twenty-eight million, eight hundred thirty-seven thousand, three hundred eighty".