163724028 has 48 divisors (see below), whose sum is σ = 429305856. Its totient is φ = 48185280.

The previous prime is 163724027. The next prime is 163724047. The reversal of 163724028 is 820427361.

It is a hoax number, since the sum of its digits (33) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 163724028.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163724027) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19228 + ... + 26403.

It is an arithmetic number, because the mean of its divisors is an integer number (8943872).

Almost surely, 2^163724028 is an apocalyptic number.

It is an amenable number.

163724028 is an abundant number, since it is smaller than the sum of its proper divisors (265581828).

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

163724028 is a wasteful number, since it uses less digits than its factorization.

163724028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45674 (or 45672 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 33.

The square root of 163724028 is about 12795.4690418132. The cubic root of 163724028 is about 547.0631648251.

The spelling of 163724028 in words is "one hundred sixty-three million, seven hundred twenty-four thousand, twenty-eight".