16436 has 12 divisors (see below), whose sum is σ = 32928. Its totient is φ = 7032.

The previous prime is 16433. The next prime is 16447. The reversal of 16436 is 63461.

16436 = T₆₅ + T₆₆ + ... + T₇₁.

16436 is an admirable number.

It is a d-powerful number, because it can be written as 1 + 6 + 4⁷ + 3² + 6² .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16433) 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, 266 + ... + 321.

It is an arithmetic number, because the mean of its divisors is an integer number (2744).

2¹⁶⁴³⁶ is an apocalyptic number.

It is an amenable number.

16436 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.

It is a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16464).

16436 is a wasteful number, since it uses less digits than its factorization.

16436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 598 (or 596 counting only the distinct ones).

The product of its digits is 432, while the sum is 20.

The square root of 16436 is about 128.2029640843. The cubic root of 16436 is about 25.4252585244.

Adding to 16436 its reverse (63461), we get a palindrome (79897).

The spelling of 16436 in words is "sixteen thousand, four hundred thirty-six".