28575779 has 8 divisors (see below), whose sum is σ = 29504112. Its totient is φ = 27659520.

The previous prime is 28575763. The next prime is 28575839. The reversal of 28575779 is 97757582.

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 28575779 - 2⁴ = 28575763 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28575979) 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, 1919 + ... + 7799.

It is an arithmetic number, because the mean of its divisors is an integer number (3688014).

Almost surely, 2^28575779 is an apocalyptic number.

28575779 is a deficient number, since it is larger than the sum of its proper divisors (928333).

28575779 is a wasteful number, since it uses less digits than its factorization.

28575779 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6037.

The product of its digits is 1234800, while the sum is 50.

The square root of 28575779 is about 5345.6317680888. The cubic root of 28575779 is about 305.7262242924.

The spelling of 28575779 in words is "twenty-eight million, five hundred seventy-five thousand, seven hundred seventy-nine".