28011847 has 2 divisors, whose sum is σ = 28011848. Its totient is φ = 28011846.

The previous prime is 28011839. The next prime is 28011853. The reversal of 28011847 is 74811082.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28011847 - 2³ = 28011839 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28011857) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14005923 + 14005924.

It is an arithmetic number, because the mean of its divisors is an integer number (14005924).

Almost surely, 2^28011847 is an apocalyptic number.

28011847 is a deficient number, since it is larger than the sum of its proper divisors (1).

28011847 is an equidigital number, since it uses as much as digits as its factorization.

28011847 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3584, while the sum is 31.

The square root of 28011847 is about 5292.6219400218. The cubic root of 28011847 is about 303.7017178983.

The spelling of 28011847 in words is "twenty-eight million, eleven thousand, eight hundred forty-seven".