12634280 has 16 divisors (see below), whose sum is σ = 28427220. Its totient is φ = 5053696.

The previous prime is 12634253. The next prime is 12634301. The reversal of 12634280 is 8243621.

It can be written as a sum of positive squares in 2 ways, for example, as 12630916 + 3364 = 3554^2 + 58^2 .

It is a super-2 number, since 2×12634280² = 319250062236800, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 157889 + ... + 157968.

Almost surely, 2^12634280 is an apocalyptic number.

12634280 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12634280 is an abundant number, since it is smaller than the sum of its proper divisors (15792940).

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

12634280 is a wasteful number, since it uses less digits than its factorization.

12634280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 315868 (or 315864 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 26.

The square root of 12634280 is about 3554.4732380481. The cubic root of 12634280 is about 232.9075136261.

The spelling of 12634280 in words is "twelve million, six hundred thirty-four thousand, two hundred eighty".