288893285 has 8 divisors (see below), whose sum is σ = 346845336. Its totient is φ = 230999040.

The previous prime is 288893281. The next prime is 288893287. The reversal of 288893285 is 582398882.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 60248644 + 228644641 = 7762^2 + 15121^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 288893285 - 2² = 288893281 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (288893281) 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, 2564 + ... + 24173.

It is an arithmetic number, because the mean of its divisors is an integer number (43355667).

Almost surely, 2^288893285 is an apocalyptic number.

It is an amenable number.

288893285 is a deficient number, since it is larger than the sum of its proper divisors (57952051).

288893285 is a wasteful number, since it uses less digits than its factorization.

288893285 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28903.

The product of its digits is 2211840, while the sum is 53.

The square root of 288893285 is about 16996.8610337321. The cubic root of 288893285 is about 661.0675140822.

The spelling of 288893285 in words is "two hundred eighty-eight million, eight hundred ninety-three thousand, two hundred eighty-five".