28634863 has 2 divisors, whose sum is σ = 28634864. Its totient is φ = 28634862.

The previous prime is 28634857. The next prime is 28634869. The reversal of 28634863 is 36843682.

It is a balanced prime because it is at equal distance from previous prime (28634857) and next prime (28634869).

It is a cyclic number.

It is not a de Polignac number, because 28634863 - 2¹⁷ = 28503791 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28634869) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14317431 + 14317432.

It is an arithmetic number, because the mean of its divisors is an integer number (14317432).

Almost surely, 2^28634863 is an apocalyptic number.

28634863 is a deficient number, since it is larger than the sum of its proper divisors (1).

28634863 is an equidigital number, since it uses as much as digits as its factorization.

28634863 is an evil number, because the sum of its binary digits is even.

The product of its digits is 165888, while the sum is 40.

The square root of 28634863 is about 5351.1552958216. The cubic root of 28634863 is about 305.9367883157.

The spelling of 28634863 in words is "twenty-eight million, six hundred thirty-four thousand, eight hundred sixty-three".