20867419 has 2 divisors, whose sum is σ = 20867420. Its totient is φ = 20867418.

The previous prime is 20867411. The next prime is 20867437. The reversal of 20867419 is 91476802.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20867419 - 2³ = 20867411 is a prime.

It is a super-2 number, since 2×20867419² = 870898351443122, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (20867411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10433709 + 10433710.

It is an arithmetic number, because the mean of its divisors is an integer number (10433710).

Almost surely, 2^20867419 is an apocalyptic number.

20867419 is a deficient number, since it is larger than the sum of its proper divisors (1).

20867419 is an equidigital number, since it uses as much as digits as its factorization.

20867419 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24192, while the sum is 37.

The square root of 20867419 is about 4568.0870175600. The cubic root of 20867419 is about 275.3105868302.

The spelling of 20867419 in words is "twenty million, eight hundred sixty-seven thousand, four hundred nineteen".