16451812 has 18 divisors (see below), whose sum is σ = 31176978. Its totient is φ = 7592832.

The previous prime is 16451807. The next prime is 16451819. The reversal of 16451812 is 21815461.

16451812 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 3 ways, for example, as 2359296 + 14092516 = 1536^2 + 3754^2 .

It is not an unprimeable number, because it can be changed into a prime (16451819) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 11493 + ... + 12844.

Almost surely, 2^16451812 is an apocalyptic number.

It is an amenable number.

16451812 is a deficient number, since it is larger than the sum of its proper divisors (14725166).

16451812 is a wasteful number, since it uses less digits than its factorization.

16451812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24367 (or 24352 counting only the distinct ones).

The product of its digits is 1920, while the sum is 28.

The square root of 16451812 is about 4056.0833324773. The cubic root of 16451812 is about 254.3340923699.

The spelling of 16451812 in words is "sixteen million, four hundred fifty-one thousand, eight hundred twelve".