28650887 has 2 divisors, whose sum is σ = 28650888. Its totient is φ = 28650886.

The previous prime is 28650833. The next prime is 28650901. The reversal of 28650887 is 78805682.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28650887 - 2⁸ = 28650631 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28650487) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14325443 + 14325444.

It is an arithmetic number, because the mean of its divisors is an integer number (14325444).

Almost surely, 2^28650887 is an apocalyptic number.

28650887 is a deficient number, since it is larger than the sum of its proper divisors (1).

28650887 is an equidigital number, since it uses as much as digits as its factorization.

28650887 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 215040, while the sum is 44.

The square root of 28650887 is about 5352.6523331896. The cubic root of 28650887 is about 305.9938448361.

The spelling of 28650887 in words is "twenty-eight million, six hundred fifty thousand, eight hundred eighty-seven".