28757671 has 2 divisors, whose sum is σ = 28757672. Its totient is φ = 28757670.

The previous prime is 28757653. The next prime is 28757681. The reversal of 28757671 is 17675782.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28757671 - 2⁷ = 28757543 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28757681) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14378835 + 14378836.

It is an arithmetic number, because the mean of its divisors is an integer number (14378836).

Almost surely, 2^28757671 is an apocalyptic number.

28757671 is a deficient number, since it is larger than the sum of its proper divisors (1).

28757671 is an equidigital number, since it uses as much as digits as its factorization.

28757671 is an evil number, because the sum of its binary digits is even.

The product of its digits is 164640, while the sum is 43.

The square root of 28757671 is about 5362.6179241113. The cubic root of 28757671 is about 306.3735275106.

The spelling of 28757671 in words is "twenty-eight million, seven hundred fifty-seven thousand, six hundred seventy-one".