158221600 has 72 divisors (see below), whose sum is σ = 403099200. Its totient is φ = 60529920.

The previous prime is 158221597. The next prime is 158221603. The reversal of 158221600 is 6122851.

It is an interprime number because it is at equal distance from previous prime (158221597) and next prime (158221603).

It is a Harshad number since it is a multiple of its sum of digits (25).

It is not an unprimeable number, because it can be changed into a prime (158221603) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14101 + ... + 22699.

It is an arithmetic number, because the mean of its divisors is an integer number (5598600).

Almost surely, 2^158221600 is an apocalyptic number.

158221600 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 158221600, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (201549600).

158221600 is an abundant number, since it is smaller than the sum of its proper divisors (244877600).

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

158221600 is a wasteful number, since it uses less digits than its factorization.

158221600 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8642 (or 8629 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 25.

The square root of 158221600 is about 12578.6167761006. The cubic root of 158221600 is about 540.8646413284.

The spelling of 158221600 in words is "one hundred fifty-eight million, two hundred twenty-one thousand, six hundred".