28627171 has 2 divisors, whose sum is σ = 28627172. Its totient is φ = 28627170.

The previous prime is 28627163. The next prime is 28627177. The reversal of 28627171 is 17172682.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28627171 - 2³ = 28627163 is a prime.

It is not a weakly prime, because it can be changed into another prime (28627177) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14313585 + 14313586.

It is an arithmetic number, because the mean of its divisors is an integer number (14313586).

Almost surely, 2^28627171 is an apocalyptic number.

28627171 is a deficient number, since it is larger than the sum of its proper divisors (1).

28627171 is an equidigital number, since it uses as much as digits as its factorization.

28627171 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9408, while the sum is 34.

The square root of 28627171 is about 5350.4365242473. The cubic root of 28627171 is about 305.9093919152.

The spelling of 28627171 in words is "twenty-eight million, six hundred twenty-seven thousand, one hundred seventy-one".