12523816 has 16 divisors (see below), whose sum is σ = 23620500. Its totient is φ = 6225024.

The previous prime is 12523811. The next prime is 12523829. The reversal of 12523816 is 61832521.

12523816 = T₂₈₈₈ + T₂₈₈₉ + T₂₈₉₀.

12523816 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 10432900 + 2090916 = 3230^2 + 1446^2 .

It is an alternating number because its digits alternate between odd and even.

It is not an unprimeable number, because it can be changed into a prime (12523811) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3141 + ... + 5908.

Almost surely, 2^12523816 is an apocalyptic number.

12523816 is the 2890-th centered triangular number.

It is an amenable number.

12523816 is a deficient number, since it is larger than the sum of its proper divisors (11096684).

12523816 is a wasteful number, since it uses less digits than its factorization.

12523816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9228 (or 9224 counting only the distinct ones).

The product of its digits is 2880, while the sum is 28.

The square root of 12523816 is about 3538.9003941903. The cubic root of 12523816 is about 232.2267402781.

The spelling of 12523816 in words is "twelve million, five hundred twenty-three thousand, eight hundred sixteen".