12491276 has 36 divisors (see below), whose sum is σ = 25721136. Its totient is φ = 5292000.

The previous prime is 12491273. The next prime is 12491299. The reversal of 12491276 is 67219421.

It is a happy number.

12491276 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×12491276² = 312063952216352, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12491273) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 19481 + ... + 20111.

It is an arithmetic number, because the mean of its divisors is an integer number (714476).

Almost surely, 2^12491276 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 12491276, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12860568).

12491276 is an abundant number, since it is smaller than the sum of its proper divisors (13229860).

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

12491276 is a wasteful number, since it uses less digits than its factorization.

12491276 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 750 (or 741 counting only the distinct ones).

The product of its digits is 6048, while the sum is 32.

The square root of 12491276 is about 3534.2999306793. The cubic root of 12491276 is about 232.0254381540.

The spelling of 12491276 in words is "twelve million, four hundred ninety-one thousand, two hundred seventy-six".