28305079 has 8 divisors (see below), whose sum is σ = 32503680. Its totient is φ = 24377400.

The previous prime is 28305071. The next prime is 28305097. The reversal of 28305079 is 97050382.

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 28305079 - 2³ = 28305071 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28305071) 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, 67507 + ... + 67924.

It is an arithmetic number, because the mean of its divisors is an integer number (4062960).

Almost surely, 2^28305079 is an apocalyptic number.

28305079 is a deficient number, since it is larger than the sum of its proper divisors (4198601).

28305079 is a wasteful number, since it uses less digits than its factorization.

28305079 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135461.

The product of its (nonzero) digits is 15120, while the sum is 34.

The square root of 28305079 is about 5320.2517797563. The cubic root of 28305079 is about 304.7577723813.

The spelling of 28305079 in words is "twenty-eight million, three hundred five thousand, seventy-nine".