16836438 has 8 divisors (see below), whose sum is σ = 33672888. Its totient is φ = 5612144.

The previous prime is 16836431. The next prime is 16836487. The reversal of 16836438 is 83463861.

It is a sphenic number, since it is the product of 3 distinct primes.

16836438 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 16836396 and 16836405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16836431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1403031 + ... + 1403042.

It is an arithmetic number, because the mean of its divisors is an integer number (4209111).

Almost surely, 2^16836438 is an apocalyptic number.

16836438 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.

16836438 is a wasteful number, since it uses less digits than its factorization.

16836438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2806078.

The product of its digits is 82944, while the sum is 39.

The square root of 16836438 is about 4103.2228796399. Note that the first 3 decimals coincide. The cubic root of 16836438 is about 256.3008649375.

The spelling of 16836438 in words is "sixteen million, eight hundred thirty-six thousand, four hundred thirty-eight".