20436099 has 16 divisors (see below), whose sum is σ = 28892160. Its totient is φ = 12826080.

The previous prime is 20436089. The next prime is 20436103. The reversal of 20436099 is 99063402.

It is not a de Polignac number, because 20436099 - 2²³ = 12047491 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20436019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 472 + ... + 6410.

It is an arithmetic number, because the mean of its divisors is an integer number (1805760).

Almost surely, 2^20436099 is an apocalyptic number.

20436099 is a deficient number, since it is larger than the sum of its proper divisors (8456061).

20436099 is a wasteful number, since it uses less digits than its factorization.

20436099 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6010.

The product of its (nonzero) digits is 11664, while the sum is 33.

The square root of 20436099 is about 4520.6303763966. The cubic root of 20436099 is about 273.4005177238.

The spelling of 20436099 in words is "twenty million, four hundred thirty-six thousand, ninety-nine".