20321434 has 8 divisors (see below), whose sum is σ = 34836768. Its totient is φ = 8709180.

The previous prime is 20321423. The next prime is 20321447. The reversal of 20321434 is 43412302.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 725752 + ... + 725779.

It is an arithmetic number, because the mean of its divisors is an integer number (4354596).

Almost surely, 2^20321434 is an apocalyptic number.

20321434 is a deficient number, since it is larger than the sum of its proper divisors (14515334).

20321434 is a wasteful number, since it uses less digits than its factorization.

20321434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1451540.

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 20321434 is about 4507.9301236820. The cubic root of 20321434 is about 272.8882169698. Note that the first 3 decimals are identical.

Adding to 20321434 its reverse (43412302), we get a palindrome (63733736).

The spelling of 20321434 in words is "twenty million, three hundred twenty-one thousand, four hundred thirty-four".