2689229808 has 50 divisors (see below), whose sum is σ = 7783415024. Its totient is φ = 896409504.

The previous prime is 2689229801. The next prime is 2689229821. The reversal of 2689229808 is 8089229862.

2689229808 is a `hidden beast` number, since 268 + 92 + 298 + 0 + 8 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2689229801) 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 9 ways as a sum of consecutive naturals, for example, 1036216 + ... + 1038807.

Almost surely, 2^2689229808 is an apocalyptic number.

It is an amenable number.

2689229808 is an abundant number, since it is smaller than the sum of its proper divisors (5094185216).

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

2689229808 is a wasteful number, since it uses less digits than its factorization.

2689229808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2075043 (or 2075028 counting only the distinct ones).

The product of its (nonzero) digits is 1990656, while the sum is 54.

The square root of 2689229808 is about 51857.7844493958. The cubic root of 2689229808 is about 1390.6226715261.

Adding to 2689229808 its sum of digits (54), we get a palindrome (2689229862).

The spelling of 2689229808 in words is "two billion, six hundred eighty-nine million, two hundred twenty-nine thousand, eight hundred eight".