276428771 has 2 divisors, whose sum is σ = 276428772. Its totient is φ = 276428770.

The previous prime is 276428717. The next prime is 276428791. The reversal of 276428771 is 177824672.

Together with previous prime (276428717) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-276428771 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (276428791) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 138214385 + 138214386.

It is an arithmetic number, because the mean of its divisors is an integer number (138214386).

Almost surely, 2^276428771 is an apocalyptic number.

276428771 is a deficient number, since it is larger than the sum of its proper divisors (1).

276428771 is an equidigital number, since it uses as much as digits as its factorization.

276428771 is an evil number, because the sum of its binary digits is even.

The product of its digits is 263424, while the sum is 44.

The square root of 276428771 is about 16626.1472085387. The cubic root of 276428771 is about 651.4199891258.

The spelling of 276428771 in words is "two hundred seventy-six million, four hundred twenty-eight thousand, seven hundred seventy-one".