28819338 has 8 divisors (see below), whose sum is σ = 57638688. Its totient is φ = 9606444.

The previous prime is 28819291. The next prime is 28819381. The reversal of 28819338 is 83391882.

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

28819338 is an admirable number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 28819338.

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 3 ways as a sum of consecutive naturals, for example, 2401606 + ... + 2401617.

It is an arithmetic number, because the mean of its divisors is an integer number (7204836).

Almost surely, 2^28819338 is an apocalyptic number.

28819338 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

28819338 is a wasteful number, since it uses less digits than its factorization.

28819338 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4803228.

The product of its digits is 82944, while the sum is 42.

The square root of 28819338 is about 5368.3645554303. The cubic root of 28819338 is about 306.5923635884.

The spelling of 28819338 in words is "twenty-eight million, eight hundred nineteen thousand, three hundred thirty-eight".