16449012 has 36 divisors (see below), whose sum is σ = 41706756. Its totient is φ = 5466240.

The previous prime is 16449011. The next prime is 16449019. The reversal of 16449012 is 21094461.

16449012 is a `hidden beast` number, since 1 + 644 + 9 + 0 + 12 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 9511056 + 6937956 = 3084^2 + 2634^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×16449012² = 541139991552288, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16449011) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 18318 + ... + 19194.

It is an arithmetic number, because the mean of its divisors is an integer number (1158521).

Almost surely, 2^16449012 is an apocalyptic number.

16449012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

16449012 is an abundant number, since it is smaller than the sum of its proper divisors (25257744).

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

16449012 is a wasteful number, since it uses less digits than its factorization.

16449012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1408 (or 1403 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 16449012 is about 4055.7381572286. The cubic root of 16449012 is about 254.3196628375.

The spelling of 16449012 in words is "sixteen million, four hundred forty-nine thousand, twelve".