275731968 has 80 divisors (see below), whose sum is σ = 743189040. Its totient is φ = 90832896.

The previous prime is 275731943. The next prime is 275731969. The reversal of 275731968 is 869137572.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (275731969) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 135696 + ... + 137712.

It is an arithmetic number, because the mean of its divisors is an integer number (9289863).

Almost surely, 2^275731968 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 275731968, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (371594520).

275731968 is an abundant number, since it is smaller than the sum of its proper divisors (467457072).

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

275731968 is an equidigital number, since it uses as much as digits as its factorization.

275731968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2127 (or 2111 counting only the distinct ones).

The product of its digits is 635040, while the sum is 48.

The square root of 275731968 is about 16605.1789511586. The cubic root of 275731968 is about 650.8721767154.

The spelling of 275731968 in words is "two hundred seventy-five million, seven hundred thirty-one thousand, nine hundred sixty-eight".