20393836 has 12 divisors (see below), whose sum is σ = 35755720. Its totient is φ = 10177920.

The previous prime is 20393797. The next prime is 20393839. The reversal of 20393836 is 63839302.

It is not an unprimeable number, because it can be changed into a prime (20393839) 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, 2181 + ... + 6748.

Almost surely, 2^20393836 is an apocalyptic number.

It is an amenable number.

20393836 is a deficient number, since it is larger than the sum of its proper divisors (15361884).

20393836 is a wasteful number, since it uses less digits than its factorization.

20393836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9504 (or 9502 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 34.

The square root of 20393836 is about 4515.9534984320. The cubic root of 20393836 is about 273.2119184463.

The spelling of 20393836 in words is "twenty million, three hundred ninety-three thousand, eight hundred thirty-six".