12047816 has 32 divisors (see below), whose sum is σ = 24969600. Its totient is φ = 5403840.

The previous prime is 12047813. The next prime is 12047821. The reversal of 12047816 is 61874021.

It is not an unprimeable number, because it can be changed into a prime (12047813) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6086 + ... + 7818.

It is an arithmetic number, because the mean of its divisors is an integer number (780300).

Almost surely, 2^12047816 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 12047816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12484800).

12047816 is an abundant number, since it is smaller than the sum of its proper divisors (12921784).

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

12047816 is a wasteful number, since it uses less digits than its factorization.

12047816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1829 (or 1825 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 29.

The square root of 12047816 is about 3470.9963987305. The cubic root of 12047816 is about 229.2465324863.

The spelling of 12047816 in words is "twelve million, forty-seven thousand, eight hundred sixteen".