12889764 has 36 divisors (see below), whose sum is σ = 33466524. Its totient is φ = 4180032.

The previous prime is 12889691. The next prime is 12889777. The reversal of 12889764 is 46798821.

It can be written as a sum of positive squares in 2 ways, for example, as 10304100 + 2585664 = 3210^2 + 1608^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×12889764² = 332292031951392, which contains 22 as substring.

It is an unprimeable number.

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, 3507 + ... + 6170.

Almost surely, 2^12889764 is an apocalyptic number.

It is an amenable number.

12889764 is an abundant number, since it is smaller than the sum of its proper divisors (20576760).

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

12889764 is a wasteful number, since it uses less digits than its factorization.

12889764 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9724 (or 9719 counting only the distinct ones).

The product of its digits is 193536, while the sum is 45.

The square root of 12889764 is about 3590.2317473946. The cubic root of 12889764 is about 234.4669614591.

The spelling of 12889764 in words is "twelve million, eight hundred eighty-nine thousand, seven hundred sixty-four".