20323602 has 96 divisors (see below), whose sum is σ = 52176960. Its totient is φ = 5840640.

The previous prime is 20323601. The next prime is 20323609. The reversal of 20323602 is 20632302.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20323601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 155077 + ... + 155207.

It is an arithmetic number, because the mean of its divisors is an integer number (543510).

Almost surely, 2^20323602 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20323602, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26088480).

20323602 is an abundant number, since it is smaller than the sum of its proper divisors (31853358).

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

20323602 is a wasteful number, since it uses less digits than its factorization.

20323602 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 185 (or 166 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 18.

The square root of 20323602 is about 4508.1705823981. The cubic root of 20323602 is about 272.8979210195.

Adding to 20323602 its reverse (20632302), we get a palindrome (40955904).

The spelling of 20323602 in words is "twenty million, three hundred twenty-three thousand, six hundred two".