163632220 has 12 divisors (see below), whose sum is σ = 343627704. Its totient is φ = 65452880.

The previous prime is 163632197. The next prime is 163632233. The reversal of 163632220 is 22236361.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4090786 + ... + 4090825.

It is an arithmetic number, because the mean of its divisors is an integer number (28635642).

Almost surely, 2^163632220 is an apocalyptic number.

163632220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

163632220 is an abundant number, since it is smaller than the sum of its proper divisors (179995484).

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

163632220 is a wasteful number, since it uses less digits than its factorization.

163632220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8181620 (or 8181618 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 25.

The square root of 163632220 is about 12791.8810188338. The cubic root of 163632220 is about 546.9608907599.

Adding to 163632220 its reverse (22236361), we get a palindrome (185868581).

It can be divided in two parts, 1636 and 32220, that added together give a square (33856 = 184²).

The spelling of 163632220 in words is "one hundred sixty-three million, six hundred thirty-two thousand, two hundred twenty".