163957228 has 6 divisors (see below), whose sum is σ = 286925156. Its totient is φ = 81978612.

The previous prime is 163957217. The next prime is 163957229. The reversal of 163957228 is 822759361.

163957228 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×163957228² = 53763945226887968, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (163957229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20494650 + ... + 20494657.

Almost surely, 2^163957228 is an apocalyptic number.

It is an amenable number.

163957228 is a deficient number, since it is larger than the sum of its proper divisors (122967928).

163957228 is a wasteful number, since it uses less digits than its factorization.

163957228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40989311 (or 40989309 counting only the distinct ones).

The product of its digits is 181440, while the sum is 43.

The square root of 163957228 is about 12804.5783999318. The cubic root of 163957228 is about 547.3227777217.

The spelling of 163957228 in words is "one hundred sixty-three million, nine hundred fifty-seven thousand, two hundred twenty-eight".