288363681 has 12 divisors (see below), whose sum is σ = 427783252. Its totient is φ = 187046496.

The previous prime is 288363671. The next prime is 288363697. The reversal of 288363681 is 186363882.

288363681 is a `hidden beast` number, since 2 + 8 + 8 + 3 + 636 + 8 + 1 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 274233600 + 14130081 = 16560^2 + 3759^2 .

It is not a de Polignac number, because 288363681 - 2¹⁸ = 288101537 is a prime.

It is a super-2 number, since 2×288363681² = 166307225039739522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (288363661) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 432646 + ... + 433311.

Almost surely, 2^288363681 is an apocalyptic number.

It is an amenable number.

288363681 is a deficient number, since it is larger than the sum of its proper divisors (139419571).

288363681 is a wasteful number, since it uses less digits than its factorization.

288363681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 866000 (or 865997 counting only the distinct ones).

The product of its digits is 331776, while the sum is 45.

The square root of 288363681 is about 16981.2744221392. The cubic root of 288363681 is about 660.6633069754.

It can be divided in two parts, 2883 and 63681, that added together give a square (66564 = 258²).

The spelling of 288363681 in words is "two hundred eighty-eight million, three hundred sixty-three thousand, six hundred eighty-one".