28001326 has 12 divisors (see below), whose sum is σ = 44330112. Its totient is φ = 13263444.

The previous prime is 28001321. The next prime is 28001353. The reversal of 28001326 is 62310082.

It is a junction number, because it is equal to n+sod(n) for n = 28001297 and 28001306.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28001321) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 18670 + ... + 20113.

It is an arithmetic number, because the mean of its divisors is an integer number (3694176).

Almost surely, 2^28001326 is an apocalyptic number.

28001326 is a deficient number, since it is larger than the sum of its proper divisors (16328786).

28001326 is a wasteful number, since it uses less digits than its factorization.

28001326 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38823 (or 38804 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 28001326 is about 5291.6279158686. The cubic root of 28001326 is about 303.6636905845.

The spelling of 28001326 in words is "twenty-eight million, one thousand, three hundred twenty-six".