20270417 has 2 divisors, whose sum is σ = 20270418. Its totient is φ = 20270416.

The previous prime is 20270389. The next prime is 20270431. The reversal of 20270417 is 71407202.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15673681 + 4596736 = 3959^2 + 2144^2 .

It is a cyclic number.

It is not a de Polignac number, because 20270417 - 2⁶ = 20270353 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20270392 and 20270401.

It is not a weakly prime, because it can be changed into another prime (20270617) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10135208 + 10135209.

It is an arithmetic number, because the mean of its divisors is an integer number (10135209).

Almost surely, 2^20270417 is an apocalyptic number.

It is an amenable number.

20270417 is a deficient number, since it is larger than the sum of its proper divisors (1).

20270417 is an equidigital number, since it uses as much as digits as its factorization.

20270417 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 784, while the sum is 23.

The square root of 20270417 is about 4502.2679840276. The cubic root of 20270417 is about 272.6596634666.

Adding to 20270417 its reverse (71407202), we get a palindrome (91677619).

The spelling of 20270417 in words is "twenty million, two hundred seventy thousand, four hundred seventeen".