20726267 has 2 divisors, whose sum is σ = 20726268. Its totient is φ = 20726266.

The previous prime is 20726263. The next prime is 20726269. The reversal of 20726267 is 76262702.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20726267 - 2² = 20726263 is a prime.

Together with 20726269, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (20726261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10363133 + 10363134.

It is an arithmetic number, because the mean of its divisors is an integer number (10363134).

Almost surely, 2^20726267 is an apocalyptic number.

20726267 is a deficient number, since it is larger than the sum of its proper divisors (1).

20726267 is an equidigital number, since it uses as much as digits as its factorization.

20726267 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 14112, while the sum is 32.

The square root of 20726267 is about 4552.6110090804. The cubic root of 20726267 is about 274.6884272893.

Adding to 20726267 its reverse (76262702), we get a palindrome (96988969).

The spelling of 20726267 in words is "twenty million, seven hundred twenty-six thousand, two hundred sixty-seven".