288621047 has 16 divisors (see below), whose sum is σ = 339564960. Its totient is φ = 241852800.

The previous prime is 288621013. The next prime is 288621071. The reversal of 288621047 is 740126882.

It is a cyclic number.

It is not a de Polignac number, because 288621047 - 2¹⁶ = 288555511 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 288621047.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (288651047) 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 15 ways as a sum of consecutive naturals, for example, 168029 + ... + 169737.

It is an arithmetic number, because the mean of its divisors is an integer number (21222810).

Almost surely, 2^288621047 is an apocalyptic number.

288621047 is a deficient number, since it is larger than the sum of its proper divisors (50943913).

288621047 is a wasteful number, since it uses less digits than its factorization.

288621047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2914.

The product of its (nonzero) digits is 43008, while the sum is 38.

The square root of 288621047 is about 16988.8506674230. The cubic root of 288621047 is about 660.8597969451.

The spelling of 288621047 in words is "two hundred eighty-eight million, six hundred twenty-one thousand, forty-seven".