12911936 has 28 divisors (see below), whose sum is σ = 25763220. Its totient is φ = 6420480.

The previous prime is 12911933. The next prime is 12911957. The reversal of 12911936 is 63911921.

It can be written as a sum of positive squares in 2 ways, for example, as 7529536 + 5382400 = 2744^2 + 2320^2 .

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12911933) 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 3 ways as a sum of consecutive naturals, for example, 14216 + ... + 15096.

It is an arithmetic number, because the mean of its divisors is an integer number (920115).

Almost surely, 2^12911936 is an apocalyptic number.

12911936 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

12911936 is a deficient number, since it is larger than the sum of its proper divisors (12851284).

12911936 is an equidigital number, since it uses as much as digits as its factorization.

12911936 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1122 (or 1112 counting only the distinct ones).

The product of its digits is 2916, while the sum is 32.

The square root of 12911936 is about 3593.3182436294. The cubic root of 12911936 is about 234.6013219115.

The spelling of 12911936 in words is "twelve million, nine hundred eleven thousand, nine hundred thirty-six".