28568055 has 8 divisors (see below), whose sum is σ = 45708912. Its totient is φ = 15236288.

The previous prime is 28568051. The next prime is 28568083. The reversal of 28568055 is 55086582.

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 28568055 - 2² = 28568051 is a prime.

It is a super-2 number, since 2×28568055² = 1632267532966050, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28568051) 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, 952254 + ... + 952283.

It is an arithmetic number, because the mean of its divisors is an integer number (5713614).

Almost surely, 2^28568055 is an apocalyptic number.

28568055 is a deficient number, since it is larger than the sum of its proper divisors (17140857).

28568055 is a wasteful number, since it uses less digits than its factorization.

28568055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1904545.

The product of its (nonzero) digits is 96000, while the sum is 39.

The square root of 28568055 is about 5344.9092602214. The cubic root of 28568055 is about 305.6986759953.

The spelling of 28568055 in words is "twenty-eight million, five hundred sixty-eight thousand, fifty-five".