28389326 has 24 divisors (see below), whose sum is σ = 49948416. Its totient is φ = 12065760.

The previous prime is 28389313. The next prime is 28389341. The reversal of 28389326 is 62398382.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11306 + ... + 13586.

It is an arithmetic number, because the mean of its divisors is an integer number (2081184).

Almost surely, 2^28389326 is an apocalyptic number.

28389326 is a deficient number, since it is larger than the sum of its proper divisors (21559090).

28389326 is a wasteful number, since it uses less digits than its factorization.

28389326 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2424 (or 2417 counting only the distinct ones).

The product of its digits is 124416, while the sum is 41.

The square root of 28389326 is about 5328.1634734681. The cubic root of 28389326 is about 305.0598323897.

The spelling of 28389326 in words is "twenty-eight million, three hundred eighty-nine thousand, three hundred twenty-six".