20329243 has 16 divisors (see below), whose sum is σ = 22982400. Its totient is φ = 17820000.

The previous prime is 20329237. The next prime is 20329247. The reversal of 20329243 is 34292302.

It is a de Polignac number, because none of the positive numbers 2^k-20329243 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20329247) 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 15 ways as a sum of consecutive naturals, for example, 80868 + ... + 81118.

It is an arithmetic number, because the mean of its divisors is an integer number (1436400).

Almost surely, 2^20329243 is an apocalyptic number.

20329243 is a deficient number, since it is larger than the sum of its proper divisors (2653157).

20329243 is a wasteful number, since it uses less digits than its factorization.

20329243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 498.

The product of its (nonzero) digits is 2592, while the sum is 25.

The square root of 20329243 is about 4508.7961808004. The cubic root of 20329243 is about 272.9231671146.

The spelling of 20329243 in words is "twenty million, three hundred twenty-nine thousand, two hundred forty-three".