276276560728 has 64 divisors (see below), whose sum is σ = 606996149760. Its totient is φ = 115420225536.

The previous prime is 276276560711. The next prime is 276276560731. The reversal of 276276560728 is 827065672672.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1097176 + ... + 1325272.

It is an arithmetic number, because the mean of its divisors is an integer number (9484314840).

Almost surely, 2^276276560728 is an apocalyptic number.

276276560728 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 276276560728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (303498074880).

276276560728 is an abundant number, since it is smaller than the sum of its proper divisors (330719589032).

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

276276560728 is a wasteful number, since it uses less digits than its factorization.

276276560728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 228656 (or 228652 counting only the distinct ones).

The product of its (nonzero) digits is 23708160, while the sum is 58.

The spelling of 276276560728 in words is "two hundred seventy-six billion, two hundred seventy-six million, five hundred sixty thousand, seven hundred twenty-eight".