276801644 has 12 divisors (see below), whose sum is σ = 553603344. Its totient is φ = 118629264.

The previous prime is 276801643. The next prime is 276801661. The reversal of 276801644 is 446108672.

276801644 is an admirable number.

It is a super-2 number, since 2×276801644² = 153238300242205472, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 276801598 and 276801607.

It is not an unprimeable number, because it can be changed into a prime (276801643) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4942859 + ... + 4942914.

It is an arithmetic number, because the mean of its divisors is an integer number (46133612).

Almost surely, 2^276801644 is an apocalyptic number.

It is an amenable number.

276801644 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

276801644 is a wasteful number, since it uses less digits than its factorization.

276801644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9885784 (or 9885782 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 38.

The square root of 276801644 is about 16637.3568814280. The cubic root of 276801644 is about 651.7127562794.

The spelling of 276801644 in words is "two hundred seventy-six million, eight hundred one thousand, six hundred forty-four".