275844240 has 240 divisors, whose sum is σ = 1067788800. Its totient is φ = 62512128.

The previous prime is 275844203. The next prime is 275844241. The reversal of 275844240 is 42448572.

It is a tau number, because it is divible by the number of its divisors (240).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 275844195 and 275844204.

It is not an unprimeable number, because it can be changed into a prime (275844241) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1154041 + ... + 1154279.

It is an arithmetic number, because the mean of its divisors is an integer number (4449120).

Almost surely, 2^275844240 is an apocalyptic number.

275844240 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 275844240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (533894400).

275844240 is an abundant number, since it is smaller than the sum of its proper divisors (791944560).

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

275844240 is a wasteful number, since it uses less digits than its factorization.

275844240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 494 (or 485 counting only the distinct ones).

The product of its (nonzero) digits is 71680, while the sum is 36.

The square root of 275844240 is about 16608.5592391393. The cubic root of 275844240 is about 650.9605050119.

The spelling of 275844240 in words is "two hundred seventy-five million, eight hundred forty-four thousand, two hundred forty".