28363009 has 8 divisors (see below), whose sum is σ = 29115072. Its totient is φ = 27620880.

The previous prime is 28363001. The next prime is 28363019. The reversal of 28363009 is 90036382.

It is a happy number.

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 28363009 - 2³ = 28363001 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28363001) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3487 + ... + 8299.

It is an arithmetic number, because the mean of its divisors is an integer number (3639384).

Almost surely, 2^28363009 is an apocalyptic number.

It is an amenable number.

28363009 is a deficient number, since it is larger than the sum of its proper divisors (752063).

28363009 is an equidigital number, since it uses as much as digits as its factorization.

28363009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4967.

The product of its (nonzero) digits is 7776, while the sum is 31.

The square root of 28363009 is about 5325.6932882020. The cubic root of 28363009 is about 304.9655394193.

The spelling of 28363009 in words is "twenty-eight million, three hundred sixty-three thousand, nine".