28919326 has 8 divisors (see below), whose sum is σ = 45265104. Its totient is φ = 13830960.

The previous prime is 28919321. The next prime is 28919339. The reversal of 28919326 is 62391982.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28919321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 314295 + ... + 314386.

It is an arithmetic number, because the mean of its divisors is an integer number (5658138).

Almost surely, 2^28919326 is an apocalyptic number.

28919326 is a deficient number, since it is larger than the sum of its proper divisors (16345778).

28919326 is a wasteful number, since it uses less digits than its factorization.

28919326 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 628706.

The product of its digits is 46656, while the sum is 40.

The square root of 28919326 is about 5377.6691977101. The cubic root of 28919326 is about 306.9465259280.

The spelling of 28919326 in words is "twenty-eight million, nine hundred nineteen thousand, three hundred twenty-six".