288281240 has 64 divisors (see below), whose sum is σ = 739640160. Its totient is φ = 100177920.

The previous prime is 288281233. The next prime is 288281293. The reversal of 288281240 is 42182882.

It is a self number, because there is not a number n which added to its sum of digits gives 288281240.

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, 7466 + ... + 25145.

Almost surely, 2^288281240 is an apocalyptic number.

288281240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

288281240 is an abundant number, since it is smaller than the sum of its proper divisors (451358920).

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

288281240 is a wasteful number, since it uses less digits than its factorization.

288281240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32652 (or 32648 counting only the distinct ones).

The product of its (nonzero) digits is 16384, while the sum is 35.

The square root of 288281240 is about 16978.8468395236. The cubic root of 288281240 is about 660.6003414235.

The spelling of 288281240 in words is "two hundred eighty-eight million, two hundred eighty-one thousand, two hundred forty".