156122226 has 48 divisors (see below), whose sum is σ = 367687320. Its totient is φ = 47589120.

The previous prime is 156122191. The next prime is 156122257. The reversal of 156122226 is 622221651.

156122226 is a `hidden beast` number, since 1 + 5 + 612 + 22 + 26 = 666.

156122226 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 90269001 + 65853225 = 9501^2 + 8115^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 156122226.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 22446 + ... + 28566.

Almost surely, 2^156122226 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 156122226, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (183843660).

156122226 is an abundant number, since it is smaller than the sum of its proper divisors (211565094).

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

156122226 is a wasteful number, since it uses less digits than its factorization.

156122226 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6251 (or 6248 counting only the distinct ones).

The product of its digits is 2880, while the sum is 27.

The square root of 156122226 is about 12494.8879946961. The cubic root of 156122226 is about 538.4618160763.

Adding to 156122226 its reverse (622221651), we get a palindrome (778343877).

The spelling of 156122226 in words is "one hundred fifty-six million, one hundred twenty-two thousand, two hundred twenty-six".