276338881 has 12 divisors (see below), whose sum is σ = 346183572. Its totient is φ = 218641248.

The previous prime is 276338879. The next prime is 276338899. The reversal of 276338881 is 188833672.

It can be written as a sum of positive squares in 2 ways, for example, as 115455025 + 160883856 = 10745^2 + 12684^2 .

It is not a de Polignac number, because 276338881 - 2¹ = 276338879 is a prime.

It is a super-2 number, since 2×276338881² = 152726354304664322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (276338861) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 216270 + ... + 217543.

It is an arithmetic number, because the mean of its divisors is an integer number (28848631).

Almost surely, 2^276338881 is an apocalyptic number.

It is an amenable number.

276338881 is a deficient number, since it is larger than the sum of its proper divisors (69844691).

276338881 is a wasteful number, since it uses less digits than its factorization.

276338881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 433840 (or 433833 counting only the distinct ones).

The product of its digits is 387072, while the sum is 46.

The square root of 276338881 is about 16623.4437166310. The cubic root of 276338881 is about 651.3493711858.

The spelling of 276338881 in words is "two hundred seventy-six million, three hundred thirty-eight thousand, eight hundred eighty-one".