20446417 has 2 divisors, whose sum is σ = 20446418. Its totient is φ = 20446416.

The previous prime is 20446411. The next prime is 20446423. The reversal of 20446417 is 71464402.

It is a balanced prime because it is at equal distance from previous prime (20446411) and next prime (20446423).

It can be written as a sum of positive squares in only one way, i.e., 11350161 + 9096256 = 3369^2 + 3016^2 .

It is a cyclic number.

It is not a de Polignac number, because 20446417 - 2⁷ = 20446289 is a prime.

It is not a weakly prime, because it can be changed into another prime (20446411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10223208 + 10223209.

It is an arithmetic number, because the mean of its divisors is an integer number (10223209).

Almost surely, 2^20446417 is an apocalyptic number.

It is an amenable number.

20446417 is a deficient number, since it is larger than the sum of its proper divisors (1).

20446417 is an equidigital number, since it uses as much as digits as its factorization.

20446417 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5376, while the sum is 28.

The square root of 20446417 is about 4521.7714449096. The cubic root of 20446417 is about 273.4465224582.

The spelling of 20446417 in words is "twenty million, four hundred forty-six thousand, four hundred seventeen".