20464267 has 2 divisors, whose sum is σ = 20464268. Its totient is φ = 20464266.

The previous prime is 20464237. The next prime is 20464271. The reversal of 20464267 is 76246402.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20464267 is a prime.

It is not a weakly prime, because it can be changed into another prime (20464217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10232133 + 10232134.

It is an arithmetic number, because the mean of its divisors is an integer number (10232134).

Almost surely, 2^20464267 is an apocalyptic number.

20464267 is a deficient number, since it is larger than the sum of its proper divisors (1).

20464267 is an equidigital number, since it uses as much as digits as its factorization.

20464267 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16128, while the sum is 31.

The square root of 20464267 is about 4523.7447982838. The cubic root of 20464267 is about 273.5260734901.

The spelling of 20464267 in words is "twenty million, four hundred sixty-four thousand, two hundred sixty-seven".