158440226 has 24 divisors (see below), whose sum is σ = 278503596. Its totient is φ = 67401600.

The previous prime is 158440207. The next prime is 158440231. The reversal of 158440226 is 622044851.

It can be written as a sum of positive squares in 2 ways, for example, as 157879225 + 561001 = 12565^2 + 749^2 .

It is a junction number, because it is equal to n+sod(n) for n = 158440192 and 158440201.

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 11 ways as a sum of consecutive naturals, for example, 7526 + ... + 19326.

Almost surely, 2^158440226 is an apocalyptic number.

158440226 is a deficient number, since it is larger than the sum of its proper divisors (120063370).

158440226 is a wasteful number, since it uses less digits than its factorization.

158440226 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11954 (or 11947 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 32.

The square root of 158440226 is about 12587.3041593504. The cubic root of 158440226 is about 541.1136436799.

The spelling of 158440226 in words is "one hundred fifty-eight million, four hundred forty thousand, two hundred twenty-six".