275281164 has 18 divisors (see below), whose sum is σ = 695849700. Its totient is φ = 91760376.

The previous prime is 275281159. The next prime is 275281169. The reversal of 275281164 is 461182572.

It is an interprime number because it is at equal distance from previous prime (275281159) and next prime (275281169).

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 7646699 = 275281164 / (2 + 7 + 5 + 2 + 8 + 1 + 1 + 6 + 4).

It is not an unprimeable number, because it can be changed into a prime (275281169) 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 5 ways as a sum of consecutive naturals, for example, 3823314 + ... + 3823385.

Almost surely, 2^275281164 is an apocalyptic number.

It is an amenable number.

275281164 is an abundant number, since it is smaller than the sum of its proper divisors (420568536).

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

275281164 is a wasteful number, since it uses less digits than its factorization.

275281164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7646709 (or 7646704 counting only the distinct ones).

The product of its digits is 26880, while the sum is 36.

The square root of 275281164 is about 16591.5991995950. The cubic root of 275281164 is about 650.5172718735.

The spelling of 275281164 in words is "two hundred seventy-five million, two hundred eighty-one thousand, one hundred sixty-four".