158987340 has 192 divisors, whose sum is σ = 521579520. Its totient is φ = 40158720.

The previous prime is 158987329. The next prime is 158987347. The reversal of 158987340 is 43789851.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (158987347) 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, 951937 + ... + 952103.

It is an arithmetic number, because the mean of its divisors is an integer number (2716560).

Almost surely, 2^158987340 is an apocalyptic number.

158987340 is a gapful number since it is divisible by the number (10) 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 158987340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (260789760).

158987340 is an abundant number, since it is smaller than the sum of its proper divisors (362592180).

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

158987340 is a wasteful number, since it uses less digits than its factorization.

158987340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 269 (or 261 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 45.

The square root of 158987340 is about 12609.0182012717. The cubic root of 158987340 is about 541.7357725900.

The spelling of 158987340 in words is "one hundred fifty-eight million, nine hundred eighty-seven thousand, three hundred forty".