28849757 has 2 divisors, whose sum is σ = 28849758. Its totient is φ = 28849756.

The previous prime is 28849753. The next prime is 28849759. The reversal of 28849757 is 75794882.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 28847641 + 2116 = 5371^2 + 46^2 .

It is a cyclic number.

It is not a de Polignac number, because 28849757 - 2² = 28849753 is a prime.

Together with 28849759, 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 (28849753) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14424878 + 14424879.

It is an arithmetic number, because the mean of its divisors is an integer number (14424879).

Almost surely, 2^28849757 is an apocalyptic number.

It is an amenable number.

28849757 is a deficient number, since it is larger than the sum of its proper divisors (1).

28849757 is an equidigital number, since it uses as much as digits as its factorization.

28849757 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1128960, while the sum is 50.

The square root of 28849757 is about 5371.1969801898. The cubic root of 28849757 is about 306.7001957406.

The spelling of 28849757 in words is "twenty-eight million, eight hundred forty-nine thousand, seven hundred fifty-seven".