158966226 has 48 divisors (see below), whose sum is σ = 369532800. Its totient is φ = 51157008.

The previous prime is 158966221. The next prime is 158966243. The reversal of 158966226 is 622669851.

158966226 is a `hidden beast` number, since 1 + 589 + 6 + 62 + 2 + 6 = 666.

158966226 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×158966226² = 50540522017366152, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (158966221) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8455 + ... + 19733.

It is an arithmetic number, because the mean of its divisors is an integer number (7698600).

Almost surely, 2^158966226 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 158966226, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (184766400).

158966226 is an abundant number, since it is smaller than the sum of its proper divisors (210566574).

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

158966226 is a wasteful number, since it uses less digits than its factorization.

158966226 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11325 (or 11313 counting only the distinct ones).

The product of its digits is 311040, while the sum is 45.

The square root of 158966226 is about 12608.1809155802. The cubic root of 158966226 is about 541.7117901449.

It can be divided in two parts, 15896 and 6226, that added together give a palindrome (22122).

The spelling of 158966226 in words is "one hundred fifty-eight million, nine hundred sixty-six thousand, two hundred twenty-six".