158203240 has 64 divisors (see below), whose sum is σ = 384975360. Its totient is φ = 58164480.

The previous prime is 158203237. The next prime is 158203247. The reversal of 158203240 is 42302851.

It is not an unprimeable number, because it can be changed into a prime (158203247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 159145 + ... + 160135.

It is an arithmetic number, because the mean of its divisors is an integer number (6015240).

Almost surely, 2^158203240 is an apocalyptic number.

158203240 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 158203240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (192487680).

158203240 is an abundant number, since it is smaller than the sum of its proper divisors (226772120).

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

158203240 is a wasteful number, since it uses less digits than its factorization.

158203240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1322 (or 1318 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 25.

The square root of 158203240 is about 12577.8869449522. The cubic root of 158203240 is about 540.8437199141.

The spelling of 158203240 in words is "one hundred fifty-eight million, two hundred three thousand, two hundred forty".