163940272 has 20 divisors (see below), whose sum is σ = 321463800. Its totient is φ = 80981888.

The previous prime is 163940269. The next prime is 163940279. The reversal of 163940272 is 272049361.

163940272 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-4 number, since 4×163940272⁴ (a number of 34 digits) contains 4444 as substring. Note that it is a super-d number also for d = 3.

It is not an unprimeable number, because it can be changed into a prime (163940279) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 60397 + ... + 63052.

It is an arithmetic number, because the mean of its divisors is an integer number (16073190).

Almost surely, 2^163940272 is an apocalyptic number.

It is an amenable number.

163940272 is a deficient number, since it is larger than the sum of its proper divisors (157523528).

163940272 is a wasteful number, since it uses less digits than its factorization.

163940272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123540 (or 123534 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 34.

The square root of 163940272 is about 12803.9162758900. The cubic root of 163940272 is about 547.3039095387.

The spelling of 163940272 in words is "one hundred sixty-three million, nine hundred forty thousand, two hundred seventy-two".