20535433 has 8 divisors (see below), whose sum is σ = 21238848. Its totient is φ = 19843824.

The previous prime is 20535413. The next prime is 20535461. The reversal of 20535433 is 33453502.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20535433 - 2¹⁷ = 20404361 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20535398 and 20535407.

It is not an unprimeable number, because it can be changed into a prime (20535413) 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 7 ways as a sum of consecutive naturals, for example, 660 + ... + 6442.

It is an arithmetic number, because the mean of its divisors is an integer number (2654856).

Almost surely, 2^20535433 is an apocalyptic number.

It is an amenable number.

20535433 is a deficient number, since it is larger than the sum of its proper divisors (703415).

20535433 is an equidigital number, since it uses as much as digits as its factorization.

20535433 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5903.

The product of its (nonzero) digits is 5400, while the sum is 25.

The square root of 20535433 is about 4531.6037999808. The cubic root of 20535433 is about 273.8427756961.

Adding to 20535433 its reverse (33453502), we get a palindrome (53988935).

The spelling of 20535433 in words is "twenty million, five hundred thirty-five thousand, four hundred thirty-three".