20601285 has 8 divisors (see below), whose sum is σ = 32962080. Its totient is φ = 10987344.

The previous prime is 20601283. The next prime is 20601319. The reversal of 20601285 is 58210602.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20601285 - 2¹ = 20601283 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20601283) 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 7 ways as a sum of consecutive naturals, for example, 686695 + ... + 686724.

It is an arithmetic number, because the mean of its divisors is an integer number (4120260).

Almost surely, 2^20601285 is an apocalyptic number.

It is an amenable number.

20601285 is a deficient number, since it is larger than the sum of its proper divisors (12360795).

20601285 is a wasteful number, since it uses less digits than its factorization.

20601285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1373427.

The product of its (nonzero) digits is 960, while the sum is 24.

The square root of 20601285 is about 4538.8638446201. The cubic root of 20601285 is about 274.1351784722.

Adding to 20601285 its reverse (58210602), we get a palindrome (78811887).

The spelling of 20601285 in words is "twenty million, six hundred one thousand, two hundred eighty-five".