28190147 has 2 divisors, whose sum is σ = 28190148. Its totient is φ = 28190146.

The previous prime is 28190137. The next prime is 28190161. The reversal of 28190147 is 74109182.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28190147 - 2⁸ = 28189891 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (28190137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14095073 + 14095074.

It is an arithmetic number, because the mean of its divisors is an integer number (14095074).

Almost surely, 2^28190147 is an apocalyptic number.

28190147 is a deficient number, since it is larger than the sum of its proper divisors (1).

28190147 is an equidigital number, since it uses as much as digits as its factorization.

28190147 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4032, while the sum is 32.

The square root of 28190147 is about 5309.4394242707. The cubic root of 28190147 is about 304.3447259516.

The spelling of 28190147 in words is "twenty-eight million, one hundred ninety thousand, one hundred forty-seven".