28672177 has 2 divisors, whose sum is σ = 28672178. Its totient is φ = 28672176.

The previous prime is 28672169. The next prime is 28672199. The reversal of 28672177 is 77127682.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 23902321 + 4769856 = 4889^2 + 2184^2 .

It is a cyclic number.

It is not a de Polignac number, because 28672177 - 2³ = 28672169 is a prime.

It is not a weakly prime, because it can be changed into another prime (28672277) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14336088 + 14336089.

It is an arithmetic number, because the mean of its divisors is an integer number (14336089).

Almost surely, 2^28672177 is an apocalyptic number.

It is an amenable number.

28672177 is a deficient number, since it is larger than the sum of its proper divisors (1).

28672177 is an equidigital number, since it uses as much as digits as its factorization.

28672177 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 65856, while the sum is 40.

The square root of 28672177 is about 5354.6406975632. The cubic root of 28672177 is about 306.0696190578.

The spelling of 28672177 in words is "twenty-eight million, six hundred seventy-two thousand, one hundred seventy-seven".