276728867 has 4 divisors (see below), whose sum is σ = 277937520. Its totient is φ = 275520216.

The previous prime is 276728843. The next prime is 276728917. The reversal of 276728867 is 768827672.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 276728867 - 2¹² = 276724771 is a prime.

It is a super-2 number, since 2×276728867² = 153157731662207378, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (276728167) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 603983 + ... + 604440.

It is an arithmetic number, because the mean of its divisors is an integer number (69484380).

Almost surely, 2^276728867 is an apocalyptic number.

276728867 is a deficient number, since it is larger than the sum of its proper divisors (1208653).

276728867 is a wasteful number, since it uses less digits than its factorization.

276728867 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1208652.

The product of its digits is 3161088, while the sum is 53.

The square root of 276728867 is about 16635.1695813418. The cubic root of 276728867 is about 651.6556349223.

The spelling of 276728867 in words is "two hundred seventy-six million, seven hundred twenty-eight thousand, eight hundred sixty-seven".