158228532 has 192 divisors, whose sum is σ = 522547200. Its totient is φ = 40210560.

The previous prime is 158228531. The next prime is 158228563. The reversal of 158228532 is 235822851.

158228532 is a `hidden beast` number, since 1 + 582 + 28 + 53 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (158228531) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 440569 + ... + 440927.

It is an arithmetic number, because the mean of its divisors is an integer number (2721600).

Almost surely, 2^158228532 is an apocalyptic number.

158228532 is a gapful number since it is divisible by the number (12) 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 158228532, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (261273600).

158228532 is an abundant number, since it is smaller than the sum of its proper divisors (364318668).

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

158228532 is a wasteful number, since it uses less digits than its factorization.

158228532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 443 (or 435 counting only the distinct ones).

The product of its digits is 38400, while the sum is 36.

The square root of 158228532 is about 12578.8923200733. The cubic root of 158228532 is about 540.8725399949.

The spelling of 158228532 in words is "one hundred fifty-eight million, two hundred twenty-eight thousand, five hundred thirty-two".