28250863 has 2 divisors, whose sum is σ = 28250864. Its totient is φ = 28250862.

The previous prime is 28250861. The next prime is 28250867. The reversal of 28250863 is 36805282.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28250863 - 2¹ = 28250861 is a prime.

It is a super-2 number, since 2×28250863² = 1596222520489538, which contains 22 as substring.

Together with 28250861, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28250861) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14125431 + 14125432.

It is an arithmetic number, because the mean of its divisors is an integer number (14125432).

Almost surely, 2^28250863 is an apocalyptic number.

28250863 is a deficient number, since it is larger than the sum of its proper divisors (1).

28250863 is an equidigital number, since it uses as much as digits as its factorization.

28250863 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 23040, while the sum is 34.

The square root of 28250863 is about 5315.1540899583. The cubic root of 28250863 is about 304.5630687153.

The spelling of 28250863 in words is "twenty-eight million, two hundred fifty thousand, eight hundred sixty-three".