20535084 has 18 divisors (see below), whose sum is σ = 51908220. Its totient is φ = 6845016.

The previous prime is 20535079. The next prime is 20535089. The reversal of 20535084 is 48053502.

It is an interprime number because it is at equal distance from previous prime (20535079) and next prime (20535089).

It is a tau number, because it is divible by the number of its divisors (18).

It is not an unprimeable number, because it can be changed into a prime (20535089) 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 5 ways as a sum of consecutive naturals, for example, 285174 + ... + 285245.

It is an arithmetic number, because the mean of its divisors is an integer number (2883790).

Almost surely, 2^20535084 is an apocalyptic number.

It is an amenable number.

20535084 is an abundant number, since it is smaller than the sum of its proper divisors (31373136).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20535084 is a wasteful number, since it uses less digits than its factorization.

20535084 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 570429 (or 570424 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 27.

The square root of 20535084 is about 4531.5652924790. The cubic root of 20535084 is about 273.8412243665.

Adding to 20535084 its reverse (48053502), we get a palindrome (68588586).

The spelling of 20535084 in words is "twenty million, five hundred thirty-five thousand, eighty-four".