20432219 has 4 divisors (see below), whose sum is σ = 20441520. Its totient is φ = 20422920.

The previous prime is 20432183. The next prime is 20432233. The reversal of 20432219 is 91223402.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 20432219 - 2⁸ = 20431963 is a prime.

It is a super-2 number, since 2×20432219² = 834951146527922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20432194 and 20432203.

It is not an unprimeable number, because it can be changed into a prime (20431219) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 689 + ... + 6429.

It is an arithmetic number, because the mean of its divisors is an integer number (5110380).

Almost surely, 2^20432219 is an apocalyptic number.

20432219 is a deficient number, since it is larger than the sum of its proper divisors (9301).

20432219 is an equidigital number, since it uses as much as digits as its factorization.

20432219 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9300.

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 20432219 is about 4520.2012123356. The cubic root of 20432219 is about 273.3832140113.

It can be divided in two parts, 204 and 32219, that added together give a palindrome (32423).

The spelling of 20432219 in words is "twenty million, four hundred thirty-two thousand, two hundred nineteen".