20022407 has 2 divisors, whose sum is σ = 20022408. Its totient is φ = 20022406.

The previous prime is 20022323. The next prime is 20022427. The reversal of 20022407 is 70422002.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20022407 - 2¹⁴ = 20006023 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20022427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10011203 + 10011204.

It is an arithmetic number, because the mean of its divisors is an integer number (10011204).

Almost surely, 2^20022407 is an apocalyptic number.

20022407 is a deficient number, since it is larger than the sum of its proper divisors (1).

20022407 is an equidigital number, since it uses as much as digits as its factorization.

20022407 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 224, while the sum is 17.

The square root of 20022407 is about 4474.6404324817. The cubic root of 20022407 is about 271.5430937523.

Adding to 20022407 its reverse (70422002), we get a palindrome (90444409).

The spelling of 20022407 in words is "twenty million, twenty-two thousand, four hundred seven".