12939072 has 28 divisors (see below), whose sum is σ = 34235136. Its totient is φ = 4312960.

The previous prime is 12939061. The next prime is 12939077. The reversal of 12939072 is 27093921.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12939077) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33504 + ... + 33887.

Almost surely, 2^12939072 is an apocalyptic number.

12939072 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12939072 is an abundant number, since it is smaller than the sum of its proper divisors (21296064).

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

12939072 is an equidigital number, since it uses as much as digits as its factorization.

12939072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67406 (or 67396 counting only the distinct ones).

The product of its (nonzero) digits is 6804, while the sum is 33.

The square root of 12939072 is about 3597.0921589528. The cubic root of 12939072 is about 234.7655546270.

The spelling of 12939072 in words is "twelve million, nine hundred thirty-nine thousand, seventy-two".