20384933 has 2 divisors, whose sum is σ = 20384934. Its totient is φ = 20384932.

The previous prime is 20384927. The next prime is 20384953. The reversal of 20384933 is 33948302.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14615329 + 5769604 = 3823^2 + 2402^2 .

It is a cyclic number.

It is not a de Polignac number, because 20384933 - 2¹² = 20380837 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20384933.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20384953) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10192466 + 10192467.

It is an arithmetic number, because the mean of its divisors is an integer number (10192467).

Almost surely, 2^20384933 is an apocalyptic number.

It is an amenable number.

20384933 is a deficient number, since it is larger than the sum of its proper divisors (1).

20384933 is an equidigital number, since it uses as much as digits as its factorization.

20384933 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15552, while the sum is 32.

The square root of 20384933 is about 4514.9676632286. The cubic root of 20384933 is about 273.1721554553.

The spelling of 20384933 in words is "twenty million, three hundred eighty-four thousand, nine hundred thirty-three".