158585238 has 96 divisors (see below), whose sum is σ = 408545280. Its totient is φ = 43519680.

The previous prime is 158585237. The next prime is 158585249. The reversal of 158585238 is 832585851.

It is a junction number, because it is equal to n+sod(n) for n = 158585193 and 158585202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (158585233) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 361023 + ... + 361461.

It is an arithmetic number, because the mean of its divisors is an integer number (4255680).

Almost surely, 2^158585238 is an apocalyptic number.

158585238 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 158585238, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (204272640).

158585238 is an abundant number, since it is smaller than the sum of its proper divisors (249960042).

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

158585238 is a wasteful number, since it uses less digits than its factorization.

158585238 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 562 (or 559 counting only the distinct ones).

The product of its digits is 384000, while the sum is 45.

The square root of 158585238 is about 12593.0630904479. The cubic root of 158585238 is about 541.2786776208.

The spelling of 158585238 in words is "one hundred fifty-eight million, five hundred eighty-five thousand, two hundred thirty-eight".