163888560 has 120 divisors (see below), whose sum is σ = 600457104. Its totient is φ = 39728640.

The previous prime is 163888469. The next prime is 163888589. The reversal of 163888560 is 65888361.

163888560 is a `hidden beast` number, since 1 + 6 + 3 + 8 + 88 + 560 = 666.

163888560 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (120).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2427 + ... + 18266.

Almost surely, 2^163888560 is an apocalyptic number.

163888560 is a gapful number since it is divisible by the number (10) 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 163888560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (300228552).

163888560 is an abundant number, since it is smaller than the sum of its proper divisors (436568544).

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

163888560 is a wasteful number, since it uses less digits than its factorization.

163888560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20723 (or 20714 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 45.

The square root of 163888560 is about 12801.8967344687. The cubic root of 163888560 is about 547.2463577736.

The spelling of 163888560 in words is "one hundred sixty-three million, eight hundred eighty-eight thousand, five hundred sixty".