20120535 has 32 divisors (see below), whose sum is σ = 36142080. Its totient is φ = 10619424.

The previous prime is 20120533. The next prime is 20120539. The reversal of 20120535 is 53502102.

It is a happy number.

It is not a de Polignac number, because 20120535 - 2¹ = 20120533 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20120531) 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 31 ways as a sum of consecutive naturals, for example, 13182 + ... + 14628.

It is an arithmetic number, because the mean of its divisors is an integer number (1129440).

Almost surely, 2^20120535 is an apocalyptic number.

20120535 is a deficient number, since it is larger than the sum of its proper divisors (16021545).

20120535 is a wasteful number, since it uses less digits than its factorization.

20120535 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1564 (or 1558 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 18.

The square root of 20120535 is about 4485.5919341822. The cubic root of 20120535 is about 271.9859737216.

Adding to 20120535 its reverse (53502102), we get a palindrome (73622637).

It can be divided in two parts, 201 and 20535, that added together give a 4-th power (20736 = 12⁴).

The spelling of 20120535 in words is "twenty million, one hundred twenty thousand, five hundred thirty-five".