28930571 has 2 divisors, whose sum is σ = 28930572. Its totient is φ = 28930570.

The previous prime is 28930567. The next prime is 28930613. The reversal of 28930571 is 17503982.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28930571 - 2² = 28930567 is a prime.

It is not a weakly prime, because it can be changed into another prime (28930501) 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, 14465285 + 14465286.

It is an arithmetic number, because the mean of its divisors is an integer number (14465286).

Almost surely, 2^28930571 is an apocalyptic number.

28930571 is a deficient number, since it is larger than the sum of its proper divisors (1).

28930571 is an equidigital number, since it uses as much as digits as its factorization.

28930571 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15120, while the sum is 35.

The square root of 28930571 is about 5378.7146234021. The cubic root of 28930571 is about 306.9863051678.

The spelling of 28930571 in words is "twenty-eight million, nine hundred thirty thousand, five hundred seventy-one".