158378226 has 8 divisors (see below), whose sum is σ = 316756464. Its totient is φ = 52792740.

The previous prime is 158378219. The next prime is 158378237. The reversal of 158378226 is 622873851.

It is a sphenic number, since it is the product of 3 distinct primes.

158378226 is an admirable number.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 13198180 + ... + 13198191.

It is an arithmetic number, because the mean of its divisors is an integer number (39594558).

Almost surely, 2^158378226 is an apocalyptic number.

158378226 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

158378226 is a wasteful number, since it uses less digits than its factorization.

158378226 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26396376.

The product of its digits is 161280, while the sum is 42.

The square root of 158378226 is about 12584.8411193785. The cubic root of 158378226 is about 541.0430525517.

The spelling of 158378226 in words is "one hundred fifty-eight million, three hundred seventy-eight thousand, two hundred twenty-six".