163056220 has 24 divisors (see below), whose sum is σ = 343761264. Its totient is φ = 64966656.

The previous prime is 163056217. The next prime is 163056251. The reversal of 163056220 is 22650361.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10722 + ... + 21001.

It is an arithmetic number, because the mean of its divisors is an integer number (14323386).

Almost surely, 2^163056220 is an apocalyptic number.

163056220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

163056220 is an abundant number, since it is smaller than the sum of its proper divisors (180705044).

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

163056220 is a wasteful number, since it uses less digits than its factorization.

163056220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31989 (or 31987 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 163056220 is about 12769.3468901115. The cubic root of 163056220 is about 546.3183525419.

The spelling of 163056220 in words is "one hundred sixty-three million, fifty-six thousand, two hundred twenty".