276444868 has 54 divisors (see below), whose sum is σ = 574605486. Its totient is φ = 116012736.

The previous prime is 276444841. The next prime is 276444869. The reversal of 276444868 is 868444672.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 242362624 + 34082244 = 15568^2 + 5838^2 .

It is a Harshad number since it is a multiple of its sum of digits (49).

It is not an unprimeable number, because it can be changed into a prime (276444869) 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 17 ways as a sum of consecutive naturals, for example, 1988743 + ... + 1988881.

Almost surely, 2^276444868 is an apocalyptic number.

276444868 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 276444868, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (287302743).

276444868 is an abundant number, since it is smaller than the sum of its proper divisors (298160618).

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

276444868 is a wasteful number, since it uses less digits than its factorization.

276444868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 369 (or 221 counting only the distinct ones).

The product of its digits is 2064384, while the sum is 49.

The square root of 276444868 is about 16626.6312883879. The cubic root of 276444868 is about 651.4326333765.

The spelling of 276444868 in words is "two hundred seventy-six million, four hundred forty-four thousand, eight hundred sixty-eight".