12900436 has 12 divisors (see below), whose sum is σ = 22642900. Its totient is φ = 6431040.

The previous prime is 12900403. The next prime is 12900443. The reversal of 12900436 is 63400921.

It can be written as a sum of positive squares in 2 ways, for example, as 11600836 + 1299600 = 3406^2 + 1140^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 12900436.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3225 + ... + 6016.

Almost surely, 2^12900436 is an apocalyptic number.

It is an amenable number.

12900436 is a deficient number, since it is larger than the sum of its proper divisors (9742464).

12900436 is a wasteful number, since it uses less digits than its factorization.

12900436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9594 (or 9592 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 25.

The square root of 12900436 is about 3591.7176949198. The cubic root of 12900436 is about 234.5316520969.

The spelling of 12900436 in words is "twelve million, nine hundred thousand, four hundred thirty-six".