276868640 has 24 divisors (see below), whose sum is σ = 654102540. Its totient is φ = 110747392.

The previous prime is 276868607. The next prime is 276868663. The reversal of 276868640 is 46868672.

276868640 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 261533584 + 15335056 = 16172^2 + 3916^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 865055 + ... + 865374.

Almost surely, 2^276868640 is an apocalyptic number.

276868640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

276868640 is an abundant number, since it is smaller than the sum of its proper divisors (377233900).

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

276868640 is a wasteful number, since it uses less digits than its factorization.

276868640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1730444 (or 1730436 counting only the distinct ones).

The product of its (nonzero) digits is 774144, while the sum is 47.

The square root of 276868640 is about 16639.3701803884. The cubic root of 276868640 is about 651.7653313834.

The spelling of 276868640 in words is "two hundred seventy-six million, eight hundred sixty-eight thousand, six hundred forty".