28930305 has 8 divisors (see below), whose sum is σ = 46288512. Its totient is φ = 15429488.

The previous prime is 28930301. The next prime is 28930309. The reversal of 28930305 is 50303982.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (28930301) and next prime (28930309).

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 28930305 - 2² = 28930301 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (28930301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 964329 + ... + 964358.

It is an arithmetic number, because the mean of its divisors is an integer number (5786064).

Almost surely, 2^28930305 is an apocalyptic number.

It is an amenable number.

28930305 is a deficient number, since it is larger than the sum of its proper divisors (17358207).

28930305 is a wasteful number, since it uses less digits than its factorization.

28930305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1928695.

The product of its (nonzero) digits is 6480, while the sum is 30.

The square root of 28930305 is about 5378.6898962480. The cubic root of 28930305 is about 306.9853643106.

The spelling of 28930305 in words is "twenty-eight million, nine hundred thirty thousand, three hundred five".