12887538 has 8 divisors (see below), whose sum is σ = 25775088. Its totient is φ = 4295844.

The previous prime is 12887519. The next prime is 12887549. The reversal of 12887538 is 83578821.

It is a happy number.

12887538 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

12887538 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 12887538.

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, 1073956 + ... + 1073967.

It is an arithmetic number, because the mean of its divisors is an integer number (3221886).

Almost surely, 2^12887538 is an apocalyptic number.

12887538 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

12887538 is a wasteful number, since it uses less digits than its factorization.

12887538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2147928.

The product of its digits is 107520, while the sum is 42.

The square root of 12887538 is about 3589.9217261662. The cubic root of 12887538 is about 234.4534635781.

The spelling of 12887538 in words is "twelve million, eight hundred eighty-seven thousand, five hundred thirty-eight".