12438272 has 72 divisors (see below), whose sum is σ = 31003392. Its totient is φ = 4838400.

The previous prime is 12438269. The next prime is 12438281. The reversal of 12438272 is 27283421.

It is a super-2 number, since 2×12438272² = 309421220691968, which contains 22 as substring.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 19397 + ... + 20027.

Almost surely, 2^12438272 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 12438272, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15501696).

12438272 is an abundant number, since it is smaller than the sum of its proper divisors (18565120).

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

12438272 is an equidigital number, since it uses as much as digits as its factorization.

12438272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 665 (or 651 counting only the distinct ones).

The product of its digits is 5376, while the sum is 29.

The square root of 12438272 is about 3526.7934444762. The cubic root of 12438272 is about 231.6967897847.

The spelling of 12438272 in words is "twelve million, four hundred thirty-eight thousand, two hundred seventy-two".