7738647028 has 72 divisors (see below), whose sum is σ = 16738656480. Its totient is φ = 3112482240.

The previous prime is 7738647023. The next prime is 7738647029. The reversal of 7738647028 is 8207468377.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7738647023) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 388758 + ... + 408178.

It is an arithmetic number, because the mean of its divisors is an integer number (232481340).

Almost surely, 2^7738647028 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 7738647028, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8369328240).

7738647028 is an abundant number, since it is smaller than the sum of its proper divisors (9000009452).

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

7738647028 is a wasteful number, since it uses less digits than its factorization.

7738647028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19565 (or 19556 counting only the distinct ones).

The product of its (nonzero) digits is 3161088, while the sum is 52.

The square root of 7738647028 is about 87969.5801285876. The cubic root of 7738647028 is about 1977.9790136212.

The spelling of 7738647028 in words is "seven billion, seven hundred thirty-eight million, six hundred forty-seven thousand, twenty-eight".