28370887 has 2 divisors, whose sum is σ = 28370888. Its totient is φ = 28370886.

The previous prime is 28370879. The next prime is 28370929. The reversal of 28370887 is 78807382.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28370887 - 2³ = 28370879 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28370827) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14185443 + 14185444.

It is an arithmetic number, because the mean of its divisors is an integer number (14185444).

Almost surely, 2^28370887 is an apocalyptic number.

28370887 is a deficient number, since it is larger than the sum of its proper divisors (1).

28370887 is an equidigital number, since it uses as much as digits as its factorization.

28370887 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 150528, while the sum is 43.

The square root of 28370887 is about 5326.4328588653. The cubic root of 28370887 is about 304.9937721563.

The spelling of 28370887 in words is "twenty-eight million, three hundred seventy thousand, eight hundred eighty-seven".