16138536 has 16 divisors (see below), whose sum is σ = 40346400. Its totient is φ = 5379504.

The previous prime is 16138523. The next prime is 16138537. The reversal of 16138536 is 63583161.

It is a junction number, because it is equal to n+sod(n) for n = 16138497 and 16138506.

It is not an unprimeable number, because it can be changed into a prime (16138537) 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, 336196 + ... + 336243.

It is an arithmetic number, because the mean of its divisors is an integer number (2521650).

Almost surely, 2^16138536 is an apocalyptic number.

It is an amenable number.

16138536 is an abundant number, since it is smaller than the sum of its proper divisors (24207864).

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

16138536 is a wasteful number, since it uses less digits than its factorization.

16138536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 672448 (or 672444 counting only the distinct ones).

The product of its digits is 12960, while the sum is 33.

The square root of 16138536 is about 4017.2796765971. The cubic root of 16138536 is about 252.7093894274.

The spelling of 16138536 in words is "sixteen million, one hundred thirty-eight thousand, five hundred thirty-six".