159297228 has 18 divisors (see below), whose sum is σ = 402668084. Its totient is φ = 53099064.

The previous prime is 159297221. The next prime is 159297239. The reversal of 159297228 is 822792951.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (18).

It is not an unprimeable number, because it can be changed into a prime (159297221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2212426 + ... + 2212497.

Almost surely, 2^159297228 is an apocalyptic number.

159297228 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

159297228 is an abundant number, since it is smaller than the sum of its proper divisors (243370856).

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

159297228 is a wasteful number, since it uses less digits than its factorization.

159297228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4424933 (or 4424928 counting only the distinct ones).

The product of its digits is 181440, while the sum is 45.

The square root of 159297228 is about 12621.3005668988. The cubic root of 159297228 is about 542.0875164481.

The spelling of 159297228 in words is "one hundred fifty-nine million, two hundred ninety-seven thousand, two hundred twenty-eight".