275827640 has 64 divisors (see below), whose sum is σ = 680469120. Its totient is φ = 99792000.

The previous prime is 275827639. The next prime is 275827649. The reversal of 275827640 is 46728572.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (275827649) 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 15 ways as a sum of consecutive naturals, for example, 91355 + ... + 94325.

It is an arithmetic number, because the mean of its divisors is an integer number (10632330).

Almost surely, 2^275827640 is an apocalyptic number.

275827640 is a gapful number since it is divisible by the number (20) 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 275827640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (340234560).

275827640 is an abundant number, since it is smaller than the sum of its proper divisors (404641480).

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

275827640 is a wasteful number, since it uses less digits than its factorization.

275827640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3204 (or 3200 counting only the distinct ones).

The product of its (nonzero) digits is 188160, while the sum is 41.

The square root of 275827640 is about 16608.0594892962. The cubic root of 275827640 is about 650.9474467232.

The spelling of 275827640 in words is "two hundred seventy-five million, eight hundred twenty-seven thousand, six hundred forty".