28591367 has 8 divisors (see below), whose sum is σ = 32738976. Its totient is φ = 24459552.

The previous prime is 28591357. The next prime is 28591403. The reversal of 28591367 is 76319582.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 28591367 - 2⁴ = 28591351 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28591307) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 233 + ... + 7565.

It is an arithmetic number, because the mean of its divisors is an integer number (4092372).

Almost surely, 2^28591367 is an apocalyptic number.

28591367 is a deficient number, since it is larger than the sum of its proper divisors (4147609).

28591367 is an equidigital number, since it uses as much as digits as its factorization.

28591367 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7897.

The product of its digits is 90720, while the sum is 41.

The square root of 28591367 is about 5347.0895821933. The cubic root of 28591367 is about 305.7818050939.

The spelling of 28591367 in words is "twenty-eight million, five hundred ninety-one thousand, three hundred sixty-seven".