288404 has 6 divisors (see below), whose sum is σ = 504714. Its totient is φ = 144200.

The previous prime is 288403. The next prime is 288413. The reversal of 288404 is 404882.

It can be written as a sum of positive squares in only one way, i.e., 204304 + 84100 = 452^2 + 290^2 .

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 288404.

It is not an unprimeable number, because it can be changed into a prime (288403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36047 + ... + 36054.

It is an arithmetic number, because the mean of its divisors is an integer number (84119).

2²⁸⁸⁴⁰⁴ is an apocalyptic number.

It is an amenable number.

288404 is a deficient number, since it is larger than the sum of its proper divisors (216310).

288404 is a wasteful number, since it uses less digits than its factorization.

288404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72105 (or 72103 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 26.

The square root of 288404 is about 537.0325874656. The cubic root of 288404 is about 66.0694096847.

The spelling of 288404 in words is "two hundred eighty-eight thousand, four hundred four".