2689279128 has 48 divisors (see below), whose sum is σ = 7293085800. Its totient is φ = 895242240.

The previous prime is 2689279121. The next prime is 2689279183. The reversal of 2689279128 is 8219729862.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2689279121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 31083 + ... + 79653.

Almost surely, 2^2689279128 is an apocalyptic number.

It is an amenable number.

2689279128 is an abundant number, since it is smaller than the sum of its proper divisors (4603806672).

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

2689279128 is a wasteful number, since it uses less digits than its factorization.

2689279128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49352 (or 49345 counting only the distinct ones).

The product of its digits is 1741824, while the sum is 54.

The square root of 2689279128 is about 51858.2599785222. The cubic root of 2689279128 is about 1390.6311727323.

The spelling of 2689279128 in words is "two billion, six hundred eighty-nine million, two hundred seventy-nine thousand, one hundred twenty-eight".