28091467 has 2 divisors, whose sum is σ = 28091468. Its totient is φ = 28091466.

The previous prime is 28091449. The next prime is 28091471. The reversal of 28091467 is 76419082.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28091467 - 2⁷ = 28091339 is a prime.

It is not a weakly prime, because it can be changed into another prime (28091447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14045733 + 14045734.

It is an arithmetic number, because the mean of its divisors is an integer number (14045734).

Almost surely, 2^28091467 is an apocalyptic number.

28091467 is a deficient number, since it is larger than the sum of its proper divisors (1).

28091467 is an equidigital number, since it uses as much as digits as its factorization.

28091467 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24192, while the sum is 37.

The square root of 28091467 is about 5300.1383944195. The cubic root of 28091467 is about 303.9891897991.

The spelling of 28091467 in words is "twenty-eight million, ninety-one thousand, four hundred sixty-seven".