28055279 has 8 divisors (see below), whose sum is σ = 33097728. Its totient is φ = 23271480.

The previous prime is 28055273. The next prime is 28055299. The reversal of 28055279 is 97255082.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28055279 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28055273) 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, 64427 + ... + 64860.

It is an arithmetic number, because the mean of its divisors is an integer number (4137216).

Almost surely, 2^28055279 is an apocalyptic number.

28055279 is a deficient number, since it is larger than the sum of its proper divisors (5042449).

28055279 is a wasteful number, since it uses less digits than its factorization.

28055279 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129325.

The product of its (nonzero) digits is 50400, while the sum is 38.

The square root of 28055279 is about 5296.7234211350. The cubic root of 28055279 is about 303.8585986842.

The spelling of 28055279 in words is "twenty-eight million, fifty-five thousand, two hundred seventy-nine".