288838561 has 8 divisors (see below), whose sum is σ = 315255744. Its totient is φ = 262447920.

The previous prime is 288838559. The next prime is 288838597. The reversal of 288838561 is 165838882.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 288838561 - 2¹ = 288838559 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (288838661) 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, 21235 + ... + 32071.

It is an arithmetic number, because the mean of its divisors is an integer number (39406968).

Almost surely, 2^288838561 is an apocalyptic number.

It is an amenable number.

288838561 is a deficient number, since it is larger than the sum of its proper divisors (26417183).

288838561 is a wasteful number, since it uses less digits than its factorization.

288838561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13271.

The product of its digits is 737280, while the sum is 49.

The square root of 288838561 is about 16995.2511308306. The cubic root of 288838561 is about 661.0257702446.

The spelling of 288838561 in words is "two hundred eighty-eight million, eight hundred thirty-eight thousand, five hundred sixty-one".