12664288 has 48 divisors (see below), whose sum is σ = 30693600. Its totient is φ = 5008896.

The previous prime is 12664277. The next prime is 12664307. The reversal of 12664288 is 88246621.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 738 + ... + 5086.

It is an arithmetic number, because the mean of its divisors is an integer number (639450).

Almost surely, 2^12664288 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12664288, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15346800).

12664288 is an abundant number, since it is smaller than the sum of its proper divisors (18029312).

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

12664288 is a wasteful number, since it uses less digits than its factorization.

12664288 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4379 (or 4371 counting only the distinct ones).

The product of its digits is 36864, while the sum is 37.

The square root of 12664288 is about 3558.6918945028. The cubic root of 12664288 is about 233.0917626860.

It can be divided in two parts, 1266428 and 8, that added together give a triangular number (1266436 = T₁₅₉₁).

The spelling of 12664288 in words is "twelve million, six hundred sixty-four thousand, two hundred eighty-eight".