288465638 has 16 divisors (see below), whose sum is σ = 456185520. Its totient is φ = 136427616.

The previous prime is 288465631. The next prime is 288465659. The reversal of 288465638 is 836564882.

288465638 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (288465631) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 20120 + ... + 31332.

It is an arithmetic number, because the mean of its divisors is an integer number (28511595).

Almost surely, 2^288465638 is an apocalyptic number.

288465638 is a deficient number, since it is larger than the sum of its proper divisors (167719882).

288465638 is a wasteful number, since it uses less digits than its factorization.

288465638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11911.

The product of its digits is 2211840, while the sum is 50.

The square root of 288465638 is about 16984.2761988847. The cubic root of 288465638 is about 660.7411615690.

The spelling of 288465638 in words is "two hundred eighty-eight million, four hundred sixty-five thousand, six hundred thirty-eight".