275795840 has 64 divisors (see below), whose sum is σ = 680641920. Its totient is φ = 106752000.

The previous prime is 275795831. The next prime is 275795857. The reversal of 275795840 is 48597572.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (64).

It is a super-2 number, since 2×275795840² = 152126690722611200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12890 + ... + 26790.

It is an arithmetic number, because the mean of its divisors is an integer number (10635030).

Almost surely, 2^275795840 is an apocalyptic number.

275795840 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 275795840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (340320960).

275795840 is an abundant number, since it is smaller than the sum of its proper divisors (404846080).

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

275795840 is a wasteful number, since it uses less digits than its factorization.

275795840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13951 (or 13939 counting only the distinct ones).

The product of its (nonzero) digits is 705600, while the sum is 47.

The square root of 275795840 is about 16607.1020951881. The cubic root of 275795840 is about 650.9224299841.

The spelling of 275795840 in words is "two hundred seventy-five million, seven hundred ninety-five thousand, eight hundred forty".