163278080 has 72 divisors (see below), whose sum is σ = 446998272. Its totient is φ = 55977984.

The previous prime is 163278019. The next prime is 163278083. The reversal of 163278080 is 80872361.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a self number, because there is not a number n which added to its sum of digits gives 163278080.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163278083) 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 7 ways as a sum of consecutive naturals, for example, 152 + ... + 18071.

Almost surely, 2^163278080 is an apocalyptic number.

163278080 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 163278080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (223499136).

163278080 is an abundant number, since it is smaller than the sum of its proper divisors (283720192).

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

163278080 is an equidigital number, since it uses as much as digits as its factorization.

163278080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18251 (or 18237 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 35.

The square root of 163278080 is about 12778.0311472464. The cubic root of 163278080 is about 546.5660202047.

The spelling of 163278080 in words is "one hundred sixty-three million, two hundred seventy-eight thousand, eighty".