12487284 has 72 divisors (see below), whose sum is σ = 33939360. Its totient is φ = 4009824.

The previous prime is 12487273. The next prime is 12487301. The reversal of 12487284 is 48278421.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

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 23 ways as a sum of consecutive naturals, for example, 27967 + ... + 28409.

It is an arithmetic number, because the mean of its divisors is an integer number (471380).

Almost surely, 2^12487284 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 12487284, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16969680).

12487284 is an abundant number, since it is smaller than the sum of its proper divisors (21452076).

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

12487284 is a wasteful number, since it uses less digits than its factorization.

12487284 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 491 (or 477 counting only the distinct ones).

The product of its digits is 28672, while the sum is 36.

The square root of 12487284 is about 3533.7351343868. The cubic root of 12487284 is about 232.0007183886. Note that the first 3 decimals are identical.

The spelling of 12487284 in words is "twelve million, four hundred eighty-seven thousand, two hundred eighty-four".