158087844 has 72 divisors (see below), whose sum is σ = 409360952. Its totient is φ = 51425280.

The previous prime is 158087843. The next prime is 158087861. The reversal of 158087844 is 448780851.

It can be written as a sum of positive squares in 4 ways, for example, as 82944 + 158004900 = 288^2 + 12570^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 158087844.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (158087843) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 423642 + ... + 424014.

Almost surely, 2^158087844 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 158087844, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (204680476).

158087844 is an abundant number, since it is smaller than the sum of its proper divisors (251273108).

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

158087844 is a wasteful number, since it uses less digits than its factorization.

158087844 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 637 (or 632 counting only the distinct ones).

The product of its (nonzero) digits is 286720, while the sum is 45.

The square root of 158087844 is about 12573.2988511369. The cubic root of 158087844 is about 540.7121878784.

The spelling of 158087844 in words is "one hundred fifty-eight million, eighty-seven thousand, eight hundred forty-four".