20136435 has 16 divisors (see below), whose sum is σ = 35147520. Its totient is φ = 9763040.

The previous prime is 20136433. The next prime is 20136439. The reversal of 20136435 is 53463102.

It is a happy number.

It is not a de Polignac number, because 20136435 - 2¹ = 20136433 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20136433) 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, 60855 + ... + 61184.

It is an arithmetic number, because the mean of its divisors is an integer number (2196720).

Almost surely, 2^20136435 is an apocalyptic number.

20136435 is a deficient number, since it is larger than the sum of its proper divisors (15011085).

20136435 is a wasteful number, since it uses less digits than its factorization.

20136435 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122058.

The product of its (nonzero) digits is 2160, while the sum is 24.

The square root of 20136435 is about 4487.3639255135. The cubic root of 20136435 is about 272.0575993574.

Adding to 20136435 its reverse (53463102), we get a palindrome (73599537).

It can be divided in two parts, 2013 and 6435, that added together give a palindrome (8448).

The spelling of 20136435 in words is "twenty million, one hundred thirty-six thousand, four hundred thirty-five".