9276776728 has 16 divisors (see below), whose sum is σ = 17404019280. Its totient is φ = 4635704928.

The previous prime is 9276776711. The next prime is 9276776731. The reversal of 9276776728 is 8276776729.

It is a super-2 number, since 2×9276776728² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 320700 + ... + 348427.

It is an arithmetic number, because the mean of its divisors is an integer number (1087751205).

Almost surely, 2^9276776728 is an apocalyptic number.

It is an amenable number.

9276776728 is a deficient number, since it is larger than the sum of its proper divisors (8127242552).

9276776728 is a wasteful number, since it uses less digits than its factorization.

9276776728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 670866 (or 670862 counting only the distinct ones).

The product of its digits is 24893568, while the sum is 61.

The square root of 9276776728 is about 96316.0252917447. The cubic root of 9276776728 is about 2101.1918199220.

Subtracting from 9276776728 its reverse (8276776729), we obtain a palindrome (999999999).

The spelling of 9276776728 in words is "nine billion, two hundred seventy-six million, seven hundred seventy-six thousand, seven hundred twenty-eight".