12723816 has 64 divisors (see below), whose sum is σ = 37065600. Its totient is φ = 3564288.

The previous prime is 12723797. The next prime is 12723833. The reversal of 12723816 is 61832721.

12723816 = 280² + 281² + ... + 391².

It is a nude number because it is divisible by every one of its digits.

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

12723816 is a modest number, since divided by 3816 gives 1272 as remainder.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8190 + ... + 9618.

It is an arithmetic number, because the mean of its divisors is an integer number (579150).

Almost surely, 2^12723816 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 12723816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18532800).

12723816 is an abundant number, since it is smaller than the sum of its proper divisors (24341784).

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

12723816 is a wasteful number, since it uses less digits than its factorization.

12723816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1498 (or 1494 counting only the distinct ones).

The product of its digits is 4032, while the sum is 30.

The square root of 12723816 is about 3567.0458365432. The cubic root of 12723816 is about 233.4564049158.

The spelling of 12723816 in words is "twelve million, seven hundred twenty-three thousand, eight hundred sixteen".