20480005 has 64 divisors (see below), whose sum is σ = 33546240. Its totient is φ = 11632896.

The previous prime is 20479999. The next prime is 20480011. The reversal of 20480005 is 50008402.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (20479999) and next prime (20480011).

It is a cyclic number.

It is not a de Polignac number, because 20480005 - 2¹¹ = 20477957 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 198784 + ... + 198886.

It is an arithmetic number, because the mean of its divisors is an integer number (524160).

Almost surely, 2^20480005 is an apocalyptic number.

It is an amenable number.

20480005 is a deficient number, since it is larger than the sum of its proper divisors (13066235).

20480005 is a wasteful number, since it uses less digits than its factorization.

20480005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170.

The product of its (nonzero) digits is 320, while the sum is 19.

The square root of 20480005 is about 4525.4839520210. The cubic root of 20480005 is about 273.5961737336.

Adding to 20480005 its reverse (50008402), we get a palindrome (70488407).

It can be divided in two parts, 2048000 and 5, that multiplied together give a square (10240000 = 3200²).

The spelling of 20480005 in words is "twenty million, four hundred eighty thousand, five".