158436 has 36 divisors (see below), whose sum is σ = 417872. Its totient is φ = 52488.

The previous prime is 158429. The next prime is 158443. The reversal of 158436 is 634851.

158436 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (158429) and next prime (158443).

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a zygodrome in base 3.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 891 + ... + 1053.

2¹⁵⁸⁴³⁶ 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 158436, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (208936).

158436 is an abundant number, since it is smaller than the sum of its proper divisors (259436).

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

158436 is a wasteful number, since it uses less digits than its factorization.

158436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 182 (or 168 counting only the distinct ones).

The product of its digits is 2880, while the sum is 27.

The square root of 158436 is about 398.0401989749. The cubic root of 158436 is about 54.1108832682.

The spelling of 158436 in words is "one hundred fifty-eight thousand, four hundred thirty-six".