28344907 has 2 divisors, whose sum is σ = 28344908. Its totient is φ = 28344906.

The previous prime is 28344871. The next prime is 28344917. The reversal of 28344907 is 70944382.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28344907 - 2⁷ = 28344779 is a prime.

It is not a weakly prime, because it can be changed into another prime (28344917) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14172453 + 14172454.

It is an arithmetic number, because the mean of its divisors is an integer number (14172454).

Almost surely, 2^28344907 is an apocalyptic number.

28344907 is a deficient number, since it is larger than the sum of its proper divisors (1).

28344907 is an equidigital number, since it uses as much as digits as its factorization.

28344907 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48384, while the sum is 37.

The square root of 28344907 is about 5323.9935199059. The cubic root of 28344907 is about 304.9006466682.

The spelling of 28344907 in words is "twenty-eight million, three hundred forty-four thousand, nine hundred seven".