28711326 has 16 divisors (see below), whose sum is σ = 65625984. Its totient is φ = 8203224.

The previous prime is 28711307. The next prime is 28711339. The reversal of 28711326 is 62311782.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 28711293 and 28711302.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 341760 + ... + 341843.

It is an arithmetic number, because the mean of its divisors is an integer number (4101624).

Almost surely, 2^28711326 is an apocalyptic number.

28711326 is an abundant number, since it is smaller than the sum of its proper divisors (36914658).

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

28711326 is a wasteful number, since it uses less digits than its factorization.

28711326 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 683615.

The product of its digits is 4032, while the sum is 30.

The square root of 28711326 is about 5358.2950646638. The cubic root of 28711326 is about 306.2088582245.

The spelling of 28711326 in words is "twenty-eight million, seven hundred eleven thousand, three hundred twenty-six".