20432019 has 4 divisors (see below), whose sum is σ = 27242696. Its totient is φ = 13621344.

The previous prime is 20432017. The next prime is 20432021. The reversal of 20432019 is 91023402.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (20432017) and next prime (20432021).

It is not a de Polignac number, because 20432019 - 2¹ = 20432017 is a prime.

It is a super-2 number, since 2×20432019² = 834934800832722, 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 = 20431986 and 20432004.

It is not an unprimeable number, because it can be changed into a prime (20432017) 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 3 ways as a sum of consecutive naturals, for example, 3405334 + ... + 3405339.

It is an arithmetic number, because the mean of its divisors is an integer number (6810674).

Almost surely, 2^20432019 is an apocalyptic number.

20432019 is a deficient number, since it is larger than the sum of its proper divisors (6810677).

20432019 is an equidigital number, since it uses as much as digits as its factorization.

20432019 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6810676.

The product of its (nonzero) digits is 432, while the sum is 21.

The square root of 20432019 is about 4520.1790893725. The cubic root of 20432019 is about 273.3823220079.

It can be divided in two parts, 204 and 32019, that added together give a palindrome (32223).

The spelling of 20432019 in words is "twenty million, four hundred thirty-two thousand, nineteen".