12694528 has 132 divisors (see below), whose sum is σ = 33603552. Its totient is φ = 4730880.

The previous prime is 12694523. The next prime is 12694541. The reversal of 12694528 is 82549621.

It is a super-2 number, since 2×12694528² = 322302082285568, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12694523) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 551925 + ... + 551947.

Almost surely, 2^12694528 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 12694528, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16801776).

12694528 is an abundant number, since it is smaller than the sum of its proper divisors (20909024).

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

12694528 is a wasteful number, since it uses less digits than its factorization.

12694528 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68 (or 43 counting only the distinct ones).

The product of its digits is 34560, while the sum is 37.

The square root of 12694528 is about 3562.9381134115. The cubic root of 12694528 is about 233.2771420247.

The spelling of 12694528 in words is "twelve million, six hundred ninety-four thousand, five hundred twenty-eight".