20183328 has 144 divisors (see below), whose sum is σ = 65572416. Its totient is φ = 5829120.

The previous prime is 20183327. The next prime is 20183329. The reversal of 20183328 is 82338102.

It is an interprime number because it is at equal distance from previous prime (20183327) and next prime (20183329).

It is a tau number, because it is divible by the number of its divisors (144).

It is not an unprimeable number, because it can be changed into a prime (20183321) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 72726 + ... + 73002.

It is an arithmetic number, because the mean of its divisors is an integer number (455364).

Almost surely, 2^20183328 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20183328, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32786208).

20183328 is an abundant number, since it is smaller than the sum of its proper divisors (45389088).

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

20183328 is a wasteful number, since it uses less digits than its factorization.

20183328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 327 (or 316 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

The square root of 20183328 is about 4492.5858923342. The cubic root of 20183328 is about 272.2686215941.

The spelling of 20183328 in words is "twenty million, one hundred eighty-three thousand, three hundred twenty-eight".