275115840 has 112 divisors (see below), whose sum is σ = 878921280. Its totient is φ = 72908800.

The previous prime is 275115833. The next prime is 275115853. The reversal of 275115840 is 48511572.

It is a congruent number.

It is an unprimeable number.

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, 171040 + ... + 172640.

Almost surely, 2^275115840 is an apocalyptic number.

275115840 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 275115840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (439460640).

275115840 is an abundant number, since it is smaller than the sum of its proper divisors (603805440).

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

275115840 is a wasteful number, since it uses less digits than its factorization.

275115840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1800 (or 1790 counting only the distinct ones).

The product of its (nonzero) digits is 11200, while the sum is 33.

The square root of 275115840 is about 16586.6162914562. The cubic root of 275115840 is about 650.3870200097.

The spelling of 275115840 in words is "two hundred seventy-five million, one hundred fifteen thousand, eight hundred forty".