20107436 has 12 divisors (see below), whose sum is σ = 35784840. Its totient is φ = 9883200.

The previous prime is 20107429. The next prime is 20107441. The reversal of 20107436 is 63470102.

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, 42365 + ... + 42836.

It is an arithmetic number, because the mean of its divisors is an integer number (2982070).

Almost surely, 2^20107436 is an apocalyptic number.

It is an amenable number.

20107436 is a deficient number, since it is larger than the sum of its proper divisors (15677404).

20107436 is a wasteful number, since it uses less digits than its factorization.

20107436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85264 (or 85262 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 23.

The square root of 20107436 is about 4484.1315770169. The cubic root of 20107436 is about 271.9269375562.

Adding to 20107436 its reverse (63470102), we get a palindrome (83577538).

The spelling of 20107436 in words is "twenty million, one hundred seven thousand, four hundred thirty-six".