12758272 has 72 divisors (see below), whose sum is σ = 27880160. Its totient is φ = 5806080.

The previous prime is 12758269. The next prime is 12758281. The reversal of 12758272 is 27285721.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 209122 + ... + 209182.

Almost surely, 2^12758272 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 12758272, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13940080).

12758272 is an abundant number, since it is smaller than the sum of its proper divisors (15121888).

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

12758272 is an equidigital number, since it uses as much as digits as its factorization.

12758272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139 (or 125 counting only the distinct ones).

The product of its digits is 15680, while the sum is 34.

The square root of 12758272 is about 3571.8723381442. The cubic root of 12758272 is about 233.6669477221. Note that the first 3 decimals are identical.

The spelling of 12758272 in words is "twelve million, seven hundred fifty-eight thousand, two hundred seventy-two".