12516634 has 8 divisors (see below), whose sum is σ = 20219220. Its totient is φ = 5776896.

The previous prime is 12516631. The next prime is 12516643. The reversal of 12516634 is 43661521.

It can be written as a sum of positive squares in 2 ways, for example, as 11799225 + 717409 = 3435^2 + 847^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×12516634² = 313332253379912, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12516631) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 240679 + ... + 240730.

Almost surely, 2^12516634 is an apocalyptic number.

12516634 is a deficient number, since it is larger than the sum of its proper divisors (7702586).

12516634 is a wasteful number, since it uses less digits than its factorization.

12516634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 481424.

The product of its digits is 4320, while the sum is 28.

The square root of 12516634 is about 3537.8855266953. The cubic root of 12516634 is about 232.1823403026.

The spelling of 12516634 in words is "twelve million, five hundred sixteen thousand, six hundred thirty-four".