20480417 has 4 divisors (see below), whose sum is σ = 20679360. Its totient is φ = 20281476.

The previous prime is 20480389. The next prime is 20480431. The reversal of 20480417 is 71408402.

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 a cyclic number.

It is not a de Polignac number, because 20480417 - 2⁶ = 20480353 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20480617) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 99317 + ... + 99522.

It is an arithmetic number, because the mean of its divisors is an integer number (5169840).

Almost surely, 2^20480417 is an apocalyptic number.

It is an amenable number.

20480417 is a deficient number, since it is larger than the sum of its proper divisors (198943).

20480417 is a wasteful number, since it uses less digits than its factorization.

20480417 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 198942.

The product of its (nonzero) digits is 1792, while the sum is 26.

The square root of 20480417 is about 4525.5294717856. The cubic root of 20480417 is about 273.5980083827.

Adding to 20480417 its reverse (71408402), we get a palindrome (91888819).

The spelling of 20480417 in words is "twenty million, four hundred eighty thousand, four hundred seventeen".