28793319 has 8 divisors (see below), whose sum is σ = 38530800. Its totient is φ = 19125696.

The previous prime is 28793311. The next prime is 28793321. The reversal of 28793319 is 91339782.

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

It is not a de Polignac number, because 28793319 - 2³ = 28793311 is a prime.

It is a super-2 number, since 2×28793319² = 1658110438071522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28793311) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 16494 + ... + 18155.

It is an arithmetic number, because the mean of its divisors is an integer number (4816350).

Almost surely, 2^28793319 is an apocalyptic number.

28793319 is a deficient number, since it is larger than the sum of its proper divisors (9737481).

28793319 is a wasteful number, since it uses less digits than its factorization.

28793319 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34929.

The product of its digits is 81648, while the sum is 42.

The square root of 28793319 is about 5365.9406444723. The cubic root of 28793319 is about 306.5000687479.

The spelling of 28793319 in words is "twenty-eight million, seven hundred ninety-three thousand, three hundred nineteen".