20185036 has 6 divisors (see below), whose sum is σ = 35323820. Its totient is φ = 10092516.

The previous prime is 20185031. The next prime is 20185051. The reversal of 20185036 is 63058102.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 20185036.

It is not an unprimeable number, because it can be changed into a prime (20185031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2523126 + ... + 2523133.

Almost surely, 2^20185036 is an apocalyptic number.

It is an amenable number.

20185036 is a deficient number, since it is larger than the sum of its proper divisors (15138784).

20185036 is a wasteful number, since it uses less digits than its factorization.

20185036 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5046263 (or 5046261 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 20185036 is about 4492.7759792805. The cubic root of 20185036 is about 272.2763015579.

The spelling of 20185036 in words is "twenty million, one hundred eighty-five thousand, thirty-six".