12721088 has 28 divisors (see below), whose sum is σ = 25481280. Its totient is φ = 6300672.

The previous prime is 12721087. The next prime is 12721091. The reversal of 12721088 is 88012721.

It is a hoax number, since the sum of its digits (29) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 12721088.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12721087) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6353 + ... + 8111.

Almost surely, 2^12721088 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 12721088, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12740640).

12721088 is an abundant number, since it is smaller than the sum of its proper divisors (12760192).

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

12721088 is a wasteful number, since it uses less digits than its factorization.

12721088 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1884 (or 1874 counting only the distinct ones).

The product of its (nonzero) digits is 1792, while the sum is 29.

The square root of 12721088 is about 3566.6634267898. The cubic root of 12721088 is about 233.4397192875.

The spelling of 12721088 in words is "twelve million, seven hundred twenty-one thousand, eighty-eight".