20334436 has 12 divisors (see below), whose sum is σ = 35647612. Its totient is φ = 10149408.

The previous prime is 20334403. The next prime is 20334437. The reversal of 20334436 is 63443302.

It can be written as a sum of positive squares in 2 ways, for example, as 1464100 + 18870336 = 1210^2 + 4344^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 20334436.

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 3 ways as a sum of consecutive naturals, for example, 1695 + ... + 6598.

Almost surely, 2^20334436 is an apocalyptic number.

It is an amenable number.

20334436 is a deficient number, since it is larger than the sum of its proper divisors (15313176).

20334436 is a wasteful number, since it uses less digits than its factorization.

20334436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8910 (or 8908 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 25.

The square root of 20334436 is about 4509.3720183635. The cubic root of 20334436 is about 272.9464040734.

Adding to 20334436 its reverse (63443302), we get a palindrome (83777738).

The spelling of 20334436 in words is "twenty million, three hundred thirty-four thousand, four hundred thirty-six".