20641234 has 8 divisors (see below), whose sum is σ = 31000320. Its totient is φ = 10307796.

The previous prime is 20641223. The next prime is 20641253. The reversal of 20641234 is 43214602.

It is a happy number.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4254 + ... + 7705.

It is an arithmetic number, because the mean of its divisors is an integer number (3875040).

Almost surely, 2^20641234 is an apocalyptic number.

20641234 is a deficient number, since it is larger than the sum of its proper divisors (10359086).

20641234 is a wasteful number, since it uses less digits than its factorization.

20641234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12824.

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 20641234 is about 4543.2624841627. The cubic root of 20641234 is about 274.3122605497.

Adding to 20641234 its reverse (43214602), we get a palindrome (63855836).

The spelling of 20641234 in words is "twenty million, six hundred forty-one thousand, two hundred thirty-four".