12731634 has 32 divisors (see below), whose sum is σ = 29784000. Its totient is φ = 4020192.

The previous prime is 12731633. The next prime is 12731639. The reversal of 12731634 is 43613721.

12731634 is a `hidden beast` number, since 1 + 27 + 3 + 1 + 634 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 12731598 and 12731607.

It is not an unprimeable number, because it can be changed into a prime (12731633) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5179 + ... + 7230.

It is an arithmetic number, because the mean of its divisors is an integer number (930750).

Almost surely, 2^12731634 is an apocalyptic number.

12731634 is an abundant number, since it is smaller than the sum of its proper divisors (17052366).

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

12731634 is a wasteful number, since it uses less digits than its factorization.

12731634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12439 (or 12433 counting only the distinct ones).

The product of its digits is 3024, while the sum is 27.

The square root of 12731634 is about 3568.1415330673. The cubic root of 12731634 is about 233.5042099790.

The spelling of 12731634 in words is "twelve million, seven hundred thirty-one thousand, six hundred thirty-four".