20535382 has 16 divisors (see below), whose sum is σ = 35529120. Its totient is φ = 8719488.

The previous prime is 20535379. The next prime is 20535413. The reversal of 20535382 is 28353502.

It is a self number, because there is not a number n which added to its sum of digits gives 20535382.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5203 + ... + 8254.

It is an arithmetic number, because the mean of its divisors is an integer number (2220570).

Almost surely, 2^20535382 is an apocalyptic number.

20535382 is a deficient number, since it is larger than the sum of its proper divisors (14993738).

20535382 is a wasteful number, since it uses less digits than its factorization.

20535382 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13575.

The product of its (nonzero) digits is 7200, while the sum is 28.

The square root of 20535382 is about 4531.5981728304. The cubic root of 20535382 is about 273.8425489986.

Adding to 20535382 its reverse (28353502), we get a palindrome (48888884).

The spelling of 20535382 in words is "twenty million, five hundred thirty-five thousand, three hundred eighty-two".