275820640 has 48 divisors (see below), whose sum is σ = 672658560. Its totient is φ = 106767360.

The previous prime is 275820599. The next prime is 275820667. The reversal of 275820640 is 46028572.

It is a junction number, because it is equal to n+sod(n) for n = 275820596 and 275820605.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22845 + ... + 32764.

It is an arithmetic number, because the mean of its divisors is an integer number (14013720).

Almost surely, 2^275820640 is an apocalyptic number.

275820640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

275820640 is an abundant number, since it is smaller than the sum of its proper divisors (396837920).

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

275820640 is a wasteful number, since it uses less digits than its factorization.

275820640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55655 (or 55647 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 34.

The square root of 275820640 is about 16607.8487469028. The cubic root of 275820640 is about 650.9419400589.

The spelling of 275820640 in words is "two hundred seventy-five million, eight hundred twenty thousand, six hundred forty".