16138012 has 18 divisors (see below), whose sum is σ = 31043264. Its totient is φ = 7335240.

The previous prime is 16138009. The next prime is 16138013. The reversal of 16138012 is 21083161.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16138013) 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, 16188 + ... + 17155.

Almost surely, 2^16138012 is an apocalyptic number.

It is an amenable number.

16138012 is a deficient number, since it is larger than the sum of its proper divisors (14905252).

16138012 is a wasteful number, since it uses less digits than its factorization.

16138012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33369 (or 33356 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 22.

The square root of 16138012 is about 4017.2144578053. The cubic root of 16138012 is about 252.7066543352.

The spelling of 16138012 in words is "sixteen million, one hundred thirty-eight thousand, twelve".