276689868 has 96 divisors (see below), whose sum is σ = 810969600. Its totient is φ = 72959040.

The previous prime is 276689867. The next prime is 276689869. The reversal of 276689868 is 868986672.

It is an interprime number because it is at equal distance from previous prime (276689867) and next prime (276689869).

It is not an unprimeable number, because it can be changed into a prime (276689863) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 50923 + ... + 56093.

It is an arithmetic number, because the mean of its divisors is an integer number (8447600).

Almost surely, 2^276689868 is an apocalyptic number.

276689868 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 276689868, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (405484800).

276689868 is an abundant number, since it is smaller than the sum of its proper divisors (534279732).

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

276689868 is a wasteful number, since it uses less digits than its factorization.

276689868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5212 (or 5196 counting only the distinct ones).

The product of its digits is 13934592, while the sum is 60.

The square root of 276689868 is about 16633.9973548152. The cubic root of 276689868 is about 651.6250211880.

The spelling of 276689868 in words is "two hundred seventy-six million, six hundred eighty-nine thousand, eight hundred sixty-eight".