288869 has 8 divisors (see below), whose sum is σ = 341760. Its totient is φ = 238896.

The previous prime is 288853. The next prime is 288877. The reversal of 288869 is 968882.

It is a happy number.

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

It is not a de Polignac number, because 288869 - 2⁴ = 288853 is a prime.

It is a super-2 number, since 2×288869² = 166890598322, which contains 22 as substring.

It is a d-powerful number, because it can be written as 2² + 8 + 8⁴ + 8⁴ + 6⁷ + 9³ .

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (288839) 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, 509 + ... + 914.

It is an arithmetic number, because the mean of its divisors is an integer number (42720).

2²⁸⁸⁸⁶⁹ is an apocalyptic number.

288869 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

It is an amenable number.

288869 is a deficient number, since it is larger than the sum of its proper divisors (52891).

288869 is a wasteful number, since it uses less digits than its factorization.

288869 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1459.

The product of its digits is 55296, while the sum is 41.

The square root of 288869 is about 537.4653477202. The cubic root of 288869 is about 66.1048989970.

The spelling of 288869 in words is "two hundred eighty-eight thousand, eight hundred sixty-nine".