20233164 has 48 divisors (see below), whose sum is σ = 54656000. Its totient is φ = 5705856.

The previous prime is 20233163. The next prime is 20233181. The reversal of 20233164 is 46133202.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a plaindrome in base 16.

It is a self number, because there is not a number n which added to its sum of digits gives 20233164.

It is not an unprimeable number, because it can be changed into a prime (20233163) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5112 + ... + 8160.

Almost surely, 2^20233164 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 20233164, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27328000).

20233164 is an abundant number, since it is smaller than the sum of its proper divisors (34422836).

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

20233164 is a wasteful number, since it uses less digits than its factorization.

20233164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3142 (or 3140 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 21.

The square root of 20233164 is about 4498.1289443501. The cubic root of 20233164 is about 272.4925296047.

Adding to 20233164 its reverse (46133202), we get a palindrome (66366366).

The spelling of 20233164 in words is "twenty million, two hundred thirty-three thousand, one hundred sixty-four".