20350533 has 16 divisors (see below), whose sum is σ = 31644800. Its totient is φ = 11628288.

The previous prime is 20350531. The next prime is 20350537. The reversal of 20350533 is 33505302.

It is not a de Polignac number, because 20350533 - 2¹ = 20350531 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20350531) 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 15 ways as a sum of consecutive naturals, for example, 8860 + ... + 10917.

It is an arithmetic number, because the mean of its divisors is an integer number (1977800).

Almost surely, 2^20350533 is an apocalyptic number.

It is an amenable number.

20350533 is a deficient number, since it is larger than the sum of its proper divisors (11294267).

20350533 is an equidigital number, since it uses as much as digits as its factorization.

20350533 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19801 (or 19787 counting only the distinct ones).

The product of its (nonzero) digits is 1350, while the sum is 21.

The square root of 20350533 is about 4511.1565036030. The cubic root of 20350533 is about 273.0184077003.

Adding to 20350533 its reverse (33505302), we get a palindrome (53855835).

The spelling of 20350533 in words is "twenty million, three hundred fifty thousand, five hundred thirty-three".