16649836 has 12 divisors (see below), whose sum is σ = 33299728. Its totient is φ = 7135632.

The previous prime is 16649807. The next prime is 16649839. The reversal of 16649836 is 63894661.

16649836 is an admirable number.

It is a hoax number, since the sum of its digits (43) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 16649792 and 16649801.

It is not an unprimeable number, because it can be changed into a prime (16649839) 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, 297291 + ... + 297346.

Almost surely, 2^16649836 is an apocalyptic number.

It is an amenable number.

16649836 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

16649836 is a wasteful number, since it uses less digits than its factorization.

16649836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 594648 (or 594646 counting only the distinct ones).

The product of its digits is 186624, while the sum is 43.

The square root of 16649836 is about 4080.4210567048. The cubic root of 16649836 is about 255.3504651810.

The spelling of 16649836 in words is "sixteen million, six hundred forty-nine thousand, eight hundred thirty-six".