20417485 has 8 divisors (see below), whose sum is σ = 26728416. Its totient is φ = 14849040.

The previous prime is 20417483. The next prime is 20417489. The reversal of 20417485 is 58471402.

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

It is not a de Polignac number, because 20417485 - 2¹ = 20417483 is a prime.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20417483) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 185559 + ... + 185668.

It is an arithmetic number, because the mean of its divisors is an integer number (3341052).

Almost surely, 2^20417485 is an apocalyptic number.

It is an amenable number.

20417485 is a deficient number, since it is larger than the sum of its proper divisors (6310931).

20417485 is a wasteful number, since it uses less digits than its factorization.

20417485 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 371243.

The product of its (nonzero) digits is 8960, while the sum is 31.

The square root of 20417485 is about 4518.5711237071. The cubic root of 20417485 is about 273.3174845394.

Adding to 20417485 its reverse (58471402), we get a palindrome (78888887).

It can be divided in two parts, 20417 and 485, that added together give a palindrome (20902).

The spelling of 20417485 in words is "twenty million, four hundred seventeen thousand, four hundred eighty-five".