158004 has 96 divisors (see below), whose sum is σ = 537600. Its totient is φ = 38880.

The previous prime is 158003. The next prime is 158009. The reversal of 158004 is 400851.

158004 is nontrivially palindromic in base 8.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a nialpdrome in base 12.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (158003) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8307 + ... + 8325.

It is an arithmetic number, because the mean of its divisors is an integer number (5600).

2¹⁵⁸⁰⁰⁴ is an apocalyptic number.

158004 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 158004, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (268800).

158004 is an abundant number, since it is smaller than the sum of its proper divisors (379596).

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

158004 is a wasteful number, since it uses less digits than its factorization.

158004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50 (or 42 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 18.

The square root of 158004 is about 397.4971698012. The cubic root of 158004 is about 54.0616579663.

158004 divided by its sum of digits (18) gives a palindrome (8778).

Adding to 158004 its reverse (400851), we get a palindrome (558855).

The spelling of 158004 in words is "one hundred fifty-eight thousand, four".