12512838 has 32 divisors (see below), whose sum is σ = 27417600. Its totient is φ = 3783456.

The previous prime is 12512837. The next prime is 12512839. The reversal of 12512838 is 83821521.

It is an interprime number because it is at equal distance from previous prime (12512837) and next prime (12512839).

It is a super-2 number, since 2×12512838² = 313142229628488, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12512837) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3243 + ... + 5961.

It is an arithmetic number, because the mean of its divisors is an integer number (856800).

Almost surely, 2^12512838 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12512838, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13708800).

12512838 is an abundant number, since it is smaller than the sum of its proper divisors (14904762).

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

12512838 is a wasteful number, since it uses less digits than its factorization.

12512838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2796.

The product of its digits is 3840, while the sum is 30.

The square root of 12512838 is about 3537.3490073783. The cubic root of 12512838 is about 232.1588661194.

The spelling of 12512838 in words is "twelve million, five hundred twelve thousand, eight hundred thirty-eight".