20065436 has 12 divisors (see below), whose sum is σ = 35147112. Its totient is φ = 10023408.

The previous prime is 20065427. The next prime is 20065439. The reversal of 20065436 is 63456002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20065439) by changing a digit.

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, 5291 + ... + 8253.

It is an arithmetic number, because the mean of its divisors is an integer number (2928926).

Almost surely, 2^20065436 is an apocalyptic number.

It is an amenable number.

20065436 is a deficient number, since it is larger than the sum of its proper divisors (15081676).

20065436 is a wasteful number, since it uses less digits than its factorization.

20065436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4660 (or 4658 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 26.

The square root of 20065436 is about 4479.4459478824. The cubic root of 20065436 is about 271.7374737752.

The spelling of 20065436 in words is "twenty million, sixty-five thousand, four hundred thirty-six".