275266560 has 88 divisors (see below), whose sum is σ = 880472016. Its totient is φ = 73400320.

The previous prime is 275266559. The next prime is 275266561. The reversal of 275266560 is 65662572.

It is an interprime number because it is at equal distance from previous prime (275266559) and next prime (275266561).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (275266561) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6400 + ... + 24320.

Almost surely, 2^275266560 is an apocalyptic number.

275266560 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 275266560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (440236008).

275266560 is an abundant number, since it is smaller than the sum of its proper divisors (605205456).

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

275266560 is a wasteful number, since it uses less digits than its factorization.

275266560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17949 (or 17931 counting only the distinct ones).

The product of its (nonzero) digits is 151200, while the sum is 39.

The square root of 275266560 is about 16591.1590915162. The cubic root of 275266560 is about 650.5057680931.

The spelling of 275266560 in words is "two hundred seventy-five million, two hundred sixty-six thousand, five hundred sixty".