20323350 has 72 divisors (see below), whose sum is σ = 57500040. Its totient is φ = 5132160.

The previous prime is 20323339. The next prime is 20323351. The reversal of 20323350 is 5332302.

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

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20323351) 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 35 ways as a sum of consecutive naturals, for example, 7362 + ... + 9738.

Almost surely, 2^20323350 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20323350, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28750020).

20323350 is an abundant number, since it is smaller than the sum of its proper divisors (37176690).

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

20323350 is a wasteful number, since it uses less digits than its factorization.

20323350 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2414 (or 2406 counting only the distinct ones).

The product of its (nonzero) digits is 540, while the sum is 18.

The square root of 20323350 is about 4508.1426330585. The cubic root of 20323350 is about 272.8967930935.

Adding to 20323350 its reverse (5332302), we get a palindrome (25655652).

The spelling of 20323350 in words is "twenty million, three hundred twenty-three thousand, three hundred fifty".