12438672 has 40 divisors (see below), whose sum is σ = 32259840. Its totient is φ = 4129920.

The previous prime is 12438659. The next prime is 12438677. The reversal of 12438672 is 27683421.

12438672 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 2×12438672² = 309441122247168, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12438677) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22722 + ... + 23262.

It is an arithmetic number, because the mean of its divisors is an integer number (806496).

Almost surely, 2^12438672 is an apocalyptic number.

12438672 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12438672 is an abundant number, since it is smaller than the sum of its proper divisors (19821168).

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

12438672 is a wasteful number, since it uses less digits than its factorization.

12438672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1031 (or 1025 counting only the distinct ones).

The product of its digits is 16128, while the sum is 33.

The square root of 12438672 is about 3526.8501527567. The cubic root of 12438672 is about 231.6992734556.

The spelling of 12438672 in words is "twelve million, four hundred thirty-eight thousand, six hundred seventy-two".