28258433 has 8 divisors (see below), whose sum is σ = 32825280. Its totient is φ = 23824080.

The previous prime is 28258427. The next prime is 28258459. The reversal of 28258433 is 33485282.

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

It is not a de Polignac number, because 28258433 - 2⁸ = 28258177 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 28258393 and 28258402.

It is not an unprimeable number, because it can be changed into a prime (28258423) 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, 32663 + ... + 33516.

It is an arithmetic number, because the mean of its divisors is an integer number (4103160).

Almost surely, 2^28258433 is an apocalyptic number.

It is an amenable number.

28258433 is a deficient number, since it is larger than the sum of its proper divisors (4566847).

28258433 is an equidigital number, since it uses as much as digits as its factorization.

28258433 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66247.

The product of its digits is 46080, while the sum is 35.

The square root of 28258433 is about 5315.8661570811. The cubic root of 28258433 is about 304.5902694954.

The spelling of 28258433 in words is "twenty-eight million, two hundred fifty-eight thousand, four hundred thirty-three".