288372222009 has 21 divisors (see below), whose sum is σ = 432382286623. Its totient is φ = 192238481952.

The previous prime is 288372221999. The next prime is 288372222023. The reversal of 288372222009 is 900222273882.

The square root of 288372222009 is 537003.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 271854831609 + 16517390400 = 521397^2 + 128520^2 .

It is not a de Polignac number, because 288372222009 - 2¹⁹ = 288371697721 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (288372221009) by changing a digit.

It is a polite number, since it can be written in 20 ways as a sum of consecutive naturals, for example, 14489137 + ... + 14509025.

Almost surely, 2^288372222009 is an apocalyptic number.

288372222009 is the 537003-rd square number.

288372222009 is the 268502-nd centered octagonal number.

It is an amenable number.

288372222009 is a deficient number, since it is larger than the sum of its proper divisors (144010064614).

288372222009 is an frugal number, since it uses more digits than its factorization.

288372222009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39796 (or 19892 counting only the distinct ones).

The product of its (nonzero) digits is 387072, while the sum is 45.

The spelling of 288372222009 in words is "two hundred eighty-eight billion, three hundred seventy-two million, two hundred twenty-two thousand, nine".