20234447 has 4 divisors (see below), whose sum is σ = 20266656. Its totient is φ = 20202240.

The previous prime is 20234429. The next prime is 20234479. The reversal of 20234447 is 74443202.

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

It is a cyclic number.

It is not a de Polignac number, because 20234447 - 2¹⁴ = 20218063 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20234047) 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, 15143 + ... + 16424.

It is an arithmetic number, because the mean of its divisors is an integer number (5066664).

Almost surely, 2^20234447 is an apocalyptic number.

20234447 is a deficient number, since it is larger than the sum of its proper divisors (32209).

20234447 is an equidigital number, since it uses as much as digits as its factorization.

20234447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32208.

The product of its (nonzero) digits is 5376, while the sum is 26.

The square root of 20234447 is about 4498.2715569427. The cubic root of 20234447 is about 272.4982891344.

Adding to 20234447 its reverse (74443202), we get a palindrome (94677649).

The spelling of 20234447 in words is "twenty million, two hundred thirty-four thousand, four hundred forty-seven".