28895507 has 2 divisors, whose sum is σ = 28895508. Its totient is φ = 28895506.

The previous prime is 28895473. The next prime is 28895519. The reversal of 28895507 is 70559882.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28895507 - 2⁶ = 28895443 is a prime.

It is not a weakly prime, because it can be changed into another prime (28895407) 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, 14447753 + 14447754.

It is an arithmetic number, because the mean of its divisors is an integer number (14447754).

Almost surely, 2^28895507 is an apocalyptic number.

28895507 is a deficient number, since it is larger than the sum of its proper divisors (1).

28895507 is an equidigital number, since it uses as much as digits as its factorization.

28895507 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 201600, while the sum is 44.

The square root of 28895507 is about 5375.4541203511. The cubic root of 28895507 is about 306.8622320379.

The spelling of 28895507 in words is "twenty-eight million, eight hundred ninety-five thousand, five hundred seven".