28966247 has 2 divisors, whose sum is σ = 28966248. Its totient is φ = 28966246.

The previous prime is 28966199. The next prime is 28966297. The reversal of 28966247 is 74266982.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28966247 - 2²⁴ = 12189031 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 28966198 and 28966207.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28966297) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14483123 + 14483124.

It is an arithmetic number, because the mean of its divisors is an integer number (14483124).

Almost surely, 2^28966247 is an apocalyptic number.

28966247 is a deficient number, since it is larger than the sum of its proper divisors (1).

28966247 is an equidigital number, since it uses as much as digits as its factorization.

28966247 is an evil number, because the sum of its binary digits is even.

The product of its digits is 290304, while the sum is 44.

The square root of 28966247 is about 5382.0300073485. The cubic root of 28966247 is about 307.1124409964.

The spelling of 28966247 in words is "twenty-eight million, nine hundred sixty-six thousand, two hundred forty-seven".