28389467 has 2 divisors, whose sum is σ = 28389468. Its totient is φ = 28389466.

The previous prime is 28389409. The next prime is 28389469. The reversal of 28389467 is 76498382.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28389467 - 2²² = 24195163 is a prime.

Together with 28389469, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (28389469) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14194733 + 14194734.

It is an arithmetic number, because the mean of its divisors is an integer number (14194734).

Almost surely, 2^28389467 is an apocalyptic number.

28389467 is a deficient number, since it is larger than the sum of its proper divisors (1).

28389467 is an equidigital number, since it uses as much as digits as its factorization.

28389467 is an evil number, because the sum of its binary digits is even.

The product of its digits is 580608, while the sum is 47.

The square root of 28389467 is about 5328.1767050277. The cubic root of 28389467 is about 305.0603374313.

The spelling of 28389467 in words is "twenty-eight million, three hundred eighty-nine thousand, four hundred sixty-seven".