158444 has 24 divisors (see below), whose sum is σ = 326928. Its totient is φ = 66240.

The previous prime is 158443. The next prime is 158449. The reversal of 158444 is 444851.

It is a super-2 number, since 2×158444² = 50209002272, which contains 22 as substring.

It is a Smith number, since the sum of its digits (26) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a zygodrome in base 3.

It is not an unprimeable number, because it can be changed into a prime (158443) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 434 + ... + 710.

It is an arithmetic number, because the mean of its divisors is an integer number (13622).

2¹⁵⁸⁴⁴⁴ is an apocalyptic number.

It is an amenable number.

158444 is an abundant number, since it is smaller than the sum of its proper divisors (168484).

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

158444 is a wasteful number, since it uses less digits than its factorization.

158444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 305 (or 303 counting only the distinct ones).

The product of its digits is 2560, while the sum is 26.

The square root of 158444 is about 398.0502480843. The cubic root of 158444 is about 54.1117940036. Note that the first 3 decimals are identical.

It can be divided in two parts, 1584 and 44, that multiplied together give a palindrome (69696).

The spelling of 158444 in words is "one hundred fifty-eight thousand, four hundred forty-four".