20323450 has 24 divisors (see below), whose sum is σ = 43202592. Its totient is φ = 6967920.

The previous prime is 20323447. The next prime is 20323453. The reversal of 20323450 is 5432302.

It is an interprime number because it is at equal distance from previous prime (20323447) and next prime (20323453).

It is not an unprimeable number, because it can be changed into a prime (20323453) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 28684 + ... + 29383.

It is an arithmetic number, because the mean of its divisors is an integer number (1800108).

Almost surely, 2^20323450 is an apocalyptic number.

20323450 is an abundant number, since it is smaller than the sum of its proper divisors (22879142).

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

20323450 is a wasteful number, since it uses less digits than its factorization.

20323450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58086 (or 58081 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 19.

The square root of 20323450 is about 4508.1537240871. The cubic root of 20323450 is about 272.8972406843.

Adding to 20323450 its reverse (5432302), we get a palindrome (25755752).

It can be divided in two parts, 203 and 23450, that added together give a triangular number (23653 = T₂₁₇).

The spelling of 20323450 in words is "twenty million, three hundred twenty-three thousand, four hundred fifty".