20323650 has 48 divisors (see below), whose sum is σ = 50782464. Its totient is φ = 5378880.

The previous prime is 20323643. The next prime is 20323657. The reversal of 20323650 is 5632302.

It is an interprime number because it is at equal distance from previous prime (20323643) and next prime (20323657).

It is not an unprimeable number, because it can be changed into a prime (20323657) 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 23 ways as a sum of consecutive naturals, for example, 23119 + ... + 23981.

It is an arithmetic number, because the mean of its divisors is an integer number (1057968).

Almost surely, 2^20323650 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20323650, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25391232).

20323650 is an abundant number, since it is smaller than the sum of its proper divisors (30458814).

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

20323650 is a wasteful number, since it uses less digits than its factorization.

20323650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1035 (or 1030 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 21.

The square root of 20323650 is about 4508.1759060622. The cubic root of 20323650 is about 272.8981358615.

Adding to 20323650 its reverse (5632302), we get a palindrome (25955952).

The spelling of 20323650 in words is "twenty million, three hundred twenty-three thousand, six hundred fifty".