28887007 has 2 divisors, whose sum is σ = 28887008. Its totient is φ = 28887006.

The previous prime is 28886971. The next prime is 28887037. The reversal of 28887007 is 70078882.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28887007 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28887037) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14443503 + 14443504.

It is an arithmetic number, because the mean of its divisors is an integer number (14443504).

Almost surely, 2^28887007 is an apocalyptic number.

28887007 is a deficient number, since it is larger than the sum of its proper divisors (1).

28887007 is an equidigital number, since it uses as much as digits as its factorization.

28887007 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 50176, while the sum is 40.

The square root of 28887007 is about 5374.6634313229. The cubic root of 28887007 is about 306.8321398766.

The spelling of 28887007 in words is "twenty-eight million, eight hundred eighty-seven thousand, seven".