28306326 has 16 divisors (see below), whose sum is σ = 59943024. Its totient is φ = 8880384.

The previous prime is 28306303. The next prime is 28306337. The reversal of 28306326 is 62360382.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 28306293 and 28306302.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 138655 + ... + 138858.

It is an arithmetic number, because the mean of its divisors is an integer number (3746439).

Almost surely, 2^28306326 is an apocalyptic number.

28306326 is an abundant number, since it is smaller than the sum of its proper divisors (31636698).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28306326 is a wasteful number, since it uses less digits than its factorization.

28306326 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 277535.

The product of its (nonzero) digits is 10368, while the sum is 30.

The square root of 28306326 is about 5320.3689721672. The cubic root of 28306326 is about 304.7622477543.

The spelling of 28306326 in words is "twenty-eight million, three hundred six thousand, three hundred twenty-six".