12915774 has 40 divisors (see below), whose sum is σ = 29437848. Its totient is φ = 4231440.

The previous prime is 12915757. The next prime is 12915803. The reversal of 12915774 is 47751921.

It is a happy number.

It is a congruent number.

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 19 ways as a sum of consecutive naturals, for example, 9229 + ... + 10535.

Almost surely, 2^12915774 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12915774, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14718924).

12915774 is an abundant number, since it is smaller than the sum of its proper divisors (16522074).

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

12915774 is a wasteful number, since it uses less digits than its factorization.

12915774 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1382 (or 1373 counting only the distinct ones).

The product of its digits is 17640, while the sum is 36.

The square root of 12915774 is about 3593.8522507193. The cubic root of 12915774 is about 234.6245642478.

It can be divided in two parts, 12915 and 774, that added together give a square (13689 = 117²).

The spelling of 12915774 in words is "twelve million, nine hundred fifteen thousand, seven hundred seventy-four".