163520856 has 80 divisors (see below), whose sum is σ = 460167840. Its totient is φ = 54250560.

The previous prime is 163520837. The next prime is 163520867. The reversal of 163520856 is 658025361.

163520856 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 163520856.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 179041 + ... + 179951.

It is an arithmetic number, because the mean of its divisors is an integer number (5752098).

Almost surely, 2^163520856 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 163520856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (230083920).

163520856 is an abundant number, since it is smaller than the sum of its proper divisors (296646984).

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

163520856 is a wasteful number, since it uses less digits than its factorization.

163520856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1206 (or 1193 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 36.

The square root of 163520856 is about 12787.5273606745. The cubic root of 163520856 is about 546.8367799619.

The spelling of 163520856 in words is "one hundred sixty-three million, five hundred twenty thousand, eight hundred fifty-six".