28022347 has 2 divisors, whose sum is σ = 28022348. Its totient is φ = 28022346.

The previous prime is 28022339. The next prime is 28022353. The reversal of 28022347 is 74322082.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28022347 - 2³ = 28022339 is a prime.

It is not a weakly prime, because it can be changed into another prime (28022447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14011173 + 14011174.

It is an arithmetic number, because the mean of its divisors is an integer number (14011174).

Almost surely, 2^28022347 is an apocalyptic number.

28022347 is a deficient number, since it is larger than the sum of its proper divisors (1).

28022347 is an equidigital number, since it uses as much as digits as its factorization.

28022347 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5376, while the sum is 28.

The square root of 28022347 is about 5293.6137939974. The cubic root of 28022347 is about 303.7396598172.

The spelling of 28022347 in words is "twenty-eight million, twenty-two thousand, three hundred forty-seven".