163927872 has 84 divisors (see below), whose sum is σ = 497538756. Its totient is φ = 51425280.

The previous prime is 163927867. The next prime is 163927879. The reversal of 163927872 is 278729361.

163927872 is a `hidden beast` number, since 1 + 639 + 2 + 7 + 8 + 7 + 2 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 147476736 + 16451136 = 12144^2 + 4056^2 .

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163927879) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1422 + ... + 18162.

Almost surely, 2^163927872 is an apocalyptic number.

163927872 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 163927872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (248769378).

163927872 is an abundant number, since it is smaller than the sum of its proper divisors (333610884).

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

163927872 is a wasteful number, since it uses less digits than its factorization.

163927872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16776 (or 16763 counting only the distinct ones).

The product of its digits is 254016, while the sum is 45.

The square root of 163927872 is about 12803.4320398868. The cubic root of 163927872 is about 547.2901103270.

The spelling of 163927872 in words is "one hundred sixty-three million, nine hundred twenty-seven thousand, eight hundred seventy-two".