158505984 has 396 divisors, whose sum is σ = 594596184. Its totient is φ = 41803776.

The previous prime is 158505983. The next prime is 158505989. The reversal of 158505984 is 489505851.

It is a happy number.

158505984 is a `hidden beast` number, since 1 + 5 + 8 + 50 + 598 + 4 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (158505983) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 12192762 + ... + 12192774.

Almost surely, 2^158505984 is an apocalyptic number.

158505984 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 158505984, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (297298092).

158505984 is an abundant number, since it is smaller than the sum of its proper divisors (436090200).

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

158505984 is an equidigital number, since it uses as much as digits as its factorization.

158505984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62 (or 25 counting only the distinct ones).

The product of its (nonzero) digits is 288000, while the sum is 45.

The square root of 158505984 is about 12589.9159647712. The cubic root of 158505984 is about 541.1884934206.

The spelling of 158505984 in words is "one hundred fifty-eight million, five hundred five thousand, nine hundred eighty-four".