163952220 has 24 divisors (see below), whose sum is σ = 459066384. Its totient is φ = 43720576.

The previous prime is 163952179. The next prime is 163952221. The reversal of 163952220 is 22259361.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163952221) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1366209 + ... + 1366328.

It is an arithmetic number, because the mean of its divisors is an integer number (19127766).

Almost surely, 2^163952220 is an apocalyptic number.

163952220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

163952220 is an abundant number, since it is smaller than the sum of its proper divisors (295114164).

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

163952220 is a wasteful number, since it uses less digits than its factorization.

163952220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2732549 (or 2732547 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 30.

The square root of 163952220 is about 12804.3828433861. The cubic root of 163952220 is about 547.3172050887.

The spelling of 163952220 in words is "one hundred sixty-three million, nine hundred fifty-two thousand, two hundred twenty".