28794005 has 8 divisors (see below), whose sum is σ = 36585432. Its totient is φ = 21680128.

The previous prime is 28793993. The next prime is 28794011. The reversal of 28794005 is 50049782.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 10329796 + 18464209 = 3214^2 + 4297^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 28794005 - 2⁸ = 28793749 is a prime.

It is a Duffinian number.

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, 169292 + ... + 169461.

It is an arithmetic number, because the mean of its divisors is an integer number (4573179).

Almost surely, 2^28794005 is an apocalyptic number.

It is an amenable number.

28794005 is a deficient number, since it is larger than the sum of its proper divisors (7791427).

28794005 is a wasteful number, since it uses less digits than its factorization.

28794005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 338775.

The product of its (nonzero) digits is 20160, while the sum is 35.

The square root of 28794005 is about 5366.0045657826. The cubic root of 28794005 is about 306.5025028470.

The spelling of 28794005 in words is "twenty-eight million, seven hundred ninety-four thousand, five".