22712447 has 2 divisors, whose sum is σ = 22712448. Its totient is φ = 22712446.

The previous prime is 22712441. The next prime is 22712489. The reversal of 22712447 is 74421722.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 22712447 - 2²⁰ = 21663871 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22712441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11356223 + 11356224.

It is an arithmetic number, because the mean of its divisors is an integer number (11356224).

Almost surely, 2^22712447 is an apocalyptic number.

22712447 is a deficient number, since it is larger than the sum of its proper divisors (1).

22712447 is an equidigital number, since it uses as much as digits as its factorization.

22712447 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6272, while the sum is 29.

The square root of 22712447 is about 4765.7577571673. The cubic root of 22712447 is about 283.1965612845.

The spelling of 22712447 in words is "twenty-two million, seven hundred twelve thousand, four hundred forty-seven".