163436 has 24 divisors (see below), whose sum is σ = 352800. Its totient is φ = 64512.

The previous prime is 163433. The next prime is 163469. The reversal of 163436 is 634361.

It is a super-2 number, since 2×163436² = 53422652192, which contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

It is not an unprimeable number, because it can be changed into a prime (163433) 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 7 ways as a sum of consecutive naturals, for example, 140 + ... + 588.

It is an arithmetic number, because the mean of its divisors is an integer number (14700).

2¹⁶³⁴³⁶ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 163436, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (176400).

163436 is an abundant number, since it is smaller than the sum of its proper divisors (189364).

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

163436 is a wasteful number, since it uses less digits than its factorization.

163436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 473 (or 471 counting only the distinct ones).

The product of its digits is 1296, while the sum is 23.

The square root of 163436 is about 404.2721855384. The cubic root of 163436 is about 54.6742173456.

Adding to 163436 its reverse (634361), we get a palindrome (797797).

The spelling of 163436 in words is "one hundred sixty-three thousand, four hundred thirty-six".