20485069 has 4 divisors (see below), whose sum is σ = 22347360. Its totient is φ = 18622780.

The previous prime is 20485067. The next prime is 20485093. The reversal of 20485069 is 96058402.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 20485069 - 2¹ = 20485067 is a prime.

It is a super-2 number, since 2×20485069² = 839276103869522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20485067) 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 3 ways as a sum of consecutive naturals, for example, 931129 + ... + 931150.

It is an arithmetic number, because the mean of its divisors is an integer number (5586840).

Almost surely, 2^20485069 is an apocalyptic number.

It is an amenable number.

20485069 is a deficient number, since it is larger than the sum of its proper divisors (1862291).

20485069 is a wasteful number, since it uses less digits than its factorization.

20485069 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1862290.

The product of its (nonzero) digits is 17280, while the sum is 34.

The square root of 20485069 is about 4526.0434156115. The cubic root of 20485069 is about 273.6187221793.

It can be divided in two parts, 2048 and 5069, that added together give a palindrome (7117).

The spelling of 20485069 in words is "twenty million, four hundred eighty-five thousand, sixty-nine".