28299377 has 2 divisors, whose sum is σ = 28299378. Its totient is φ = 28299376.

The previous prime is 28299371. The next prime is 28299391. The reversal of 28299377 is 77399282.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21492496 + 6806881 = 4636^2 + 2609^2 .

It is a cyclic number.

It is not a de Polignac number, because 28299377 - 2²⁰ = 27250801 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (28299371) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14149688 + 14149689.

It is an arithmetic number, because the mean of its divisors is an integer number (14149689).

Almost surely, 2^28299377 is an apocalyptic number.

It is an amenable number.

28299377 is a deficient number, since it is larger than the sum of its proper divisors (1).

28299377 is an equidigital number, since it uses as much as digits as its factorization.

28299377 is an evil number, because the sum of its binary digits is even.

The product of its digits is 381024, while the sum is 47.

The square root of 28299377 is about 5319.7158758716. The cubic root of 28299377 is about 304.7373067313.

The spelling of 28299377 in words is "twenty-eight million, two hundred ninety-nine thousand, three hundred seventy-seven".