28794149 has 2 divisors, whose sum is σ = 28794150. Its totient is φ = 28794148.

The previous prime is 28794131. The next prime is 28794151. The reversal of 28794149 is 94149782.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 26884225 + 1909924 = 5185^2 + 1382^2 .

It is a cyclic number.

It is not a de Polignac number, because 28794149 - 2²⁰ = 27745573 is a prime.

Together with 28794151, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28794109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14397074 + 14397075.

It is an arithmetic number, because the mean of its divisors is an integer number (14397075).

Almost surely, 2^28794149 is an apocalyptic number.

It is an amenable number.

28794149 is a deficient number, since it is larger than the sum of its proper divisors (1).

28794149 is an equidigital number, since it uses as much as digits as its factorization.

28794149 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 145152, while the sum is 44.

The square root of 28794149 is about 5366.0179835703. The cubic root of 28794149 is about 306.5030137900.

The spelling of 28794149 in words is "twenty-eight million, seven hundred ninety-four thousand, one hundred forty-nine".