12538784 has 48 divisors (see below), whose sum is σ = 26671680. Its totient is φ = 5783040.

The previous prime is 12538763. The next prime is 12538811. The reversal of 12538784 is 48783521.

It is a super-2 number, since 2×12538784² = 314442208397312, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24677 + ... + 25179.

It is an arithmetic number, because the mean of its divisors is an integer number (555660).

Almost surely, 2^12538784 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 12538784, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13335840).

12538784 is an abundant number, since it is smaller than the sum of its proper divisors (14132896).

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

12538784 is a wasteful number, since it uses less digits than its factorization.

12538784 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 573 (or 565 counting only the distinct ones).

The product of its digits is 53760, while the sum is 38.

The square root of 12538784 is about 3541.0145438843. The cubic root of 12538784 is about 232.3192197051.

The spelling of 12538784 in words is "twelve million, five hundred thirty-eight thousand, seven hundred eighty-four".