20535411 has 16 divisors (see below), whose sum is σ = 29894816. Its totient is φ = 12462336.

The previous prime is 20535379. The next prime is 20535413. The reversal of 20535411 is 11453502.

It is not a de Polignac number, because 20535411 - 2⁵ = 20535379 is a prime.

It is a Duffinian number.

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 (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 760 + ... + 6453.

It is an arithmetic number, because the mean of its divisors is an integer number (1868426).

Almost surely, 2^20535411 is an apocalyptic number.

20535411 is a deficient number, since it is larger than the sum of its proper divisors (9359405).

20535411 is a wasteful number, since it uses less digits than its factorization.

20535411 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7302.

The product of its (nonzero) digits is 600, while the sum is 21.

The square root of 20535411 is about 4531.6013725834. The cubic root of 20535411 is about 273.8426779050.

Adding to 20535411 its reverse (11453502), we get a palindrome (31988913).

The spelling of 20535411 in words is "twenty million, five hundred thirty-five thousand, four hundred eleven".