163922320 has 40 divisors (see below), whose sum is σ = 384513336. Its totient is φ = 64985088.

The previous prime is 163922309. The next prime is 163922333. The reversal of 163922320 is 23229361.

It can be written as a sum of positive squares in 4 ways, for example, as 389376 + 163532944 = 624^2 + 12788^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

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, 27 + ... + 18106.

Almost surely, 2^163922320 is an apocalyptic number.

163922320 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 163922320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (192256668).

163922320 is an abundant number, since it is smaller than the sum of its proper divisors (220591016).

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

163922320 is a wasteful number, since it uses less digits than its factorization.

163922320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18259 (or 18253 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 28.

The square root of 163922320 is about 12803.2152211857. The cubic root of 163922320 is about 547.2839316156.

The spelling of 163922320 in words is "one hundred sixty-three million, nine hundred twenty-two thousand, three hundred twenty".