20535124 has 18 divisors (see below), whose sum is σ = 37930074. Its totient is φ = 9726480.

The previous prime is 20535121. The next prime is 20535131. The reversal of 20535124 is 42153502.

It can be written as a sum of positive squares in only one way, i.e., 18766224 + 1768900 = 4332^2 + 1330^2 .

It is a hoax number, since the sum of its digits (22) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 20535095 and 20535104.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20535121) 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, 5667 + ... + 8554.

Almost surely, 2^20535124 is an apocalyptic number.

It is an amenable number.

20535124 is a deficient number, since it is larger than the sum of its proper divisors (17394950).

20535124 is a wasteful number, since it uses less digits than its factorization.

20535124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14263 (or 14242 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 22.

The square root of 20535124 is about 4531.5697059628. The cubic root of 20535124 is about 273.8414021702.

Adding to 20535124 its reverse (42153502), we get a palindrome (62688626).

The spelling of 20535124 in words is "twenty million, five hundred thirty-five thousand, one hundred twenty-four".