28429171 has 2 divisors, whose sum is σ = 28429172. Its totient is φ = 28429170.

The previous prime is 28429157. The next prime is 28429207. The reversal of 28429171 is 17192482.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28429171 - 2⁷ = 28429043 is a prime.

It is not a weakly prime, because it can be changed into another prime (28426171) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14214585 + 14214586.

It is an arithmetic number, because the mean of its divisors is an integer number (14214586).

Almost surely, 2^28429171 is an apocalyptic number.

28429171 is a deficient number, since it is larger than the sum of its proper divisors (1).

28429171 is an equidigital number, since it uses as much as digits as its factorization.

28429171 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8064, while the sum is 34.

The square root of 28429171 is about 5331.9012556498. The cubic root of 28429171 is about 305.2024849111.

The spelling of 28429171 in words is "twenty-eight million, four hundred twenty-nine thousand, one hundred seventy-one".