288042538 has 16 divisors (see below), whose sum is σ = 497559744. Its totient is φ = 122503680.

The previous prime is 288042533. The next prime is 288042541. The reversal of 288042538 is 835240882.

It is a self number, because there is not a number n which added to its sum of digits gives 288042538.

It is not an unprimeable number, because it can be changed into a prime (288042533) 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, 76695 + ... + 80362.

It is an arithmetic number, because the mean of its divisors is an integer number (31097484).

Almost surely, 2^288042538 is an apocalyptic number.

288042538 is a deficient number, since it is larger than the sum of its proper divisors (209517206).

288042538 is a wasteful number, since it uses less digits than its factorization.

288042538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157197.

The product of its (nonzero) digits is 122880, while the sum is 40.

The square root of 288042538 is about 16971.8159900466. The cubic root of 288042538 is about 660.4179614610.

The spelling of 288042538 in words is "two hundred eighty-eight million, forty-two thousand, five hundred thirty-eight".