156207222 has 12 divisors (see below), whose sum is σ = 338449020. Its totient is φ = 52069068.

The previous prime is 156207211. The next prime is 156207223. The reversal of 156207222 is 222702651.

156207222 is a `hidden beast` number, since 15 + 620 + 7 + 2 + 22 = 666.

156207222 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (156207223) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4339072 + ... + 4339107.

It is an arithmetic number, because the mean of its divisors is an integer number (28204085).

Almost surely, 2^156207222 is an apocalyptic number.

156207222 is an abundant number, since it is smaller than the sum of its proper divisors (182241798).

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

156207222 is a wasteful number, since it uses less digits than its factorization.

156207222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8678187 (or 8678184 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 27.

The square root of 156207222 is about 12498.2887628667. The cubic root of 156207222 is about 538.5595147377.

Adding to 156207222 its reverse (222702651), we get a palindrome (378909873).

The spelling of 156207222 in words is "one hundred fifty-six million, two hundred seven thousand, two hundred twenty-two".