276428756 has 6 divisors (see below), whose sum is σ = 483750330. Its totient is φ = 138214376.

The previous prime is 276428717. The next prime is 276428771. The reversal of 276428756 is 657824672.

It can be written as a sum of positive squares in only one way, i.e., 222904900 + 53523856 = 14930^2 + 7316^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 276428756.

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 as a sum of consecutive naturals, namely, 34553591 + ... + 34553598.

It is an arithmetic number, because the mean of its divisors is an integer number (80625055).

Almost surely, 2^276428756 is an apocalyptic number.

It is an amenable number.

276428756 is a deficient number, since it is larger than the sum of its proper divisors (207321574).

276428756 is a wasteful number, since it uses less digits than its factorization.

276428756 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69107193 (or 69107191 counting only the distinct ones).

The product of its digits is 1128960, while the sum is 47.

The square root of 276428756 is about 16626.1467574420. The cubic root of 276428756 is about 651.4199773431.

The spelling of 276428756 in words is "two hundred seventy-six million, four hundred twenty-eight thousand, seven hundred fifty-six".