20107434 has 32 divisors (see below), whose sum is σ = 42569280. Its totient is φ = 6314112.

The previous prime is 20107429. The next prime is 20107441. The reversal of 20107434 is 43470102.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 20107434.

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 15 ways as a sum of consecutive naturals, for example, 26184 + ... + 26940.

It is an arithmetic number, because the mean of its divisors is an integer number (1330290).

Almost surely, 2^20107434 is an apocalyptic number.

20107434 is an abundant number, since it is smaller than the sum of its proper divisors (22461846).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20107434 is a wasteful number, since it uses less digits than its factorization.

20107434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1014.

The product of its (nonzero) digits is 672, while the sum is 21.

The square root of 20107434 is about 4484.1313540083. The cubic root of 20107434 is about 271.9269285404.

Adding to 20107434 its reverse (43470102), we get a palindrome (63577536).

The spelling of 20107434 in words is "twenty million, one hundred seven thousand, four hundred thirty-four".