28227907 has 2 divisors, whose sum is σ = 28227908. Its totient is φ = 28227906.

The previous prime is 28227893. The next prime is 28227911. The reversal of 28227907 is 70972282.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28227907 - 2⁷ = 28227779 is a prime.

It is not a weakly prime, because it can be changed into another prime (28227917) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14113953 + 14113954.

It is an arithmetic number, because the mean of its divisors is an integer number (14113954).

Almost surely, 2^28227907 is an apocalyptic number.

28227907 is a deficient number, since it is larger than the sum of its proper divisors (1).

28227907 is an equidigital number, since it uses as much as digits as its factorization.

28227907 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 28224, while the sum is 37.

The square root of 28227907 is about 5312.9941652518. The cubic root of 28227907 is about 304.4805527183.

The spelling of 28227907 in words is "twenty-eight million, two hundred twenty-seven thousand, nine hundred seven".