288216642 has 32 divisors (see below), whose sum is σ = 661152384. Its totient is φ = 82051200.

The previous prime is 288216631. The next prime is 288216667. The reversal of 288216642 is 246612882.

It is a self number, because there is not a number n which added to its sum of digits gives 288216642.

It is an unprimeable number.

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, 409 + ... + 24012.

It is an arithmetic number, because the mean of its divisors is an integer number (20661012).

Almost surely, 2^288216642 is an apocalyptic number.

288216642 is an abundant number, since it is smaller than the sum of its proper divisors (372935742).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

288216642 is a wasteful number, since it uses less digits than its factorization.

288216642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24714.

The product of its digits is 73728, while the sum is 39.

The square root of 288216642 is about 16976.9444247191. The cubic root of 288216642 is about 660.5509953420.

The spelling of 288216642 in words is "two hundred eighty-eight million, two hundred sixteen thousand, six hundred forty-two".