20334447 has 12 divisors (see below), whose sum is σ = 33568080. Its totient is φ = 11619648.

The previous prime is 20334439. The next prime is 20334451. The reversal of 20334447 is 74443302.

It is not a de Polignac number, because 20334447 - 2³ = 20334439 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20334447.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20334437) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 161322 + ... + 161447.

It is an arithmetic number, because the mean of its divisors is an integer number (2797340).

Almost surely, 2^20334447 is an apocalyptic number.

20334447 is a deficient number, since it is larger than the sum of its proper divisors (13233633).

20334447 is a wasteful number, since it uses less digits than its factorization.

20334447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 322782 (or 322779 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 27.

The square root of 20334447 is about 4509.3732380454. The cubic root of 20334447 is about 272.9464532906.

Adding to 20334447 its reverse (74443302), we get a palindrome (94777749).

The spelling of 20334447 in words is "twenty million, three hundred thirty-four thousand, four hundred forty-seven".