28497671 has 2 divisors, whose sum is σ = 28497672. Its totient is φ = 28497670.

The previous prime is 28497653. The next prime is 28497697. The reversal of 28497671 is 17679482.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28497671 - 2⁶ = 28497607 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28497611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14248835 + 14248836.

It is an arithmetic number, because the mean of its divisors is an integer number (14248836).

Almost surely, 2^28497671 is an apocalyptic number.

28497671 is a deficient number, since it is larger than the sum of its proper divisors (1).

28497671 is an equidigital number, since it uses as much as digits as its factorization.

28497671 is an evil number, because the sum of its binary digits is even.

The product of its digits is 169344, while the sum is 44.

The square root of 28497671 is about 5338.3209907236. The cubic root of 28497671 is about 305.4474164450.

The spelling of 28497671 in words is "twenty-eight million, four hundred ninety-seven thousand, six hundred seventy-one".