156645228 has 18 divisors (see below), whose sum is σ = 365606724. Its totient is φ = 52200624.

The previous prime is 156645217. The next prime is 156645239. The reversal of 156645228 is 822546651.

156645228 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (156645217) and next prime (156645239).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 41550 + ... + 45162.

Almost surely, 2^156645228 is an apocalyptic number.

It is an amenable number.

156645228 is an abundant number, since it is smaller than the sum of its proper divisors (208961496).

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

156645228 is an frugal number, since it uses more digits than its factorization.

156645228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7233 (or 3618 counting only the distinct ones).

The product of its digits is 115200, while the sum is 39.

The square root of 156645228 is about 12515.7991354927. The cubic root of 156645228 is about 539.0624196984.

The spelling of 156645228 in words is "one hundred fifty-six million, six hundred forty-five thousand, two hundred twenty-eight".