275491284 has 12 divisors (see below), whose sum is σ = 642813024. Its totient is φ = 91830424.

The previous prime is 275491277. The next prime is 275491291. The reversal of 275491284 is 482194572.

It is an interprime number because it is at equal distance from previous prime (275491277) and next prime (275491291).

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11478792 + ... + 11478815.

It is an arithmetic number, because the mean of its divisors is an integer number (53567752).

Almost surely, 2^275491284 is an apocalyptic number.

It is an amenable number.

275491284 is an abundant number, since it is smaller than the sum of its proper divisors (367321740).

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

275491284 is a wasteful number, since it uses less digits than its factorization.

275491284 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22957614 (or 22957612 counting only the distinct ones).

The product of its digits is 161280, while the sum is 42.

The square root of 275491284 is about 16597.9301119146. The cubic root of 275491284 is about 650.6827413940.

The spelling of 275491284 in words is "two hundred seventy-five million, four hundred ninety-one thousand, two hundred eighty-four".