163323020 has 48 divisors (see below), whose sum is σ = 396963840. Its totient is φ = 55283904.

The previous prime is 163323011. The next prime is 163323037. The reversal of 163323020 is 20323361.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 163322983 and 163323001.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 3677 + ... + 18443.

It is an arithmetic number, because the mean of its divisors is an integer number (8270080).

Almost surely, 2^163323020 is an apocalyptic number.

163323020 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 163323020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (198481920).

163323020 is an abundant number, since it is smaller than the sum of its proper divisors (233640820).

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

163323020 is a wasteful number, since it uses less digits than its factorization.

163323020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14862 (or 14860 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 20.

The square root of 163323020 is about 12779.7895131336. The cubic root of 163323020 is about 546.6161604803.

Adding to 163323020 its reverse (20323361), we get a palindrome (183646381).

The spelling of 163323020 in words is "one hundred sixty-three million, three hundred twenty-three thousand, twenty".