28127255 has 8 divisors (see below), whose sum is σ = 36349152. Its totient is φ = 20770848.

The previous prime is 28127251. The next prime is 28127263. The reversal of 28127255 is 55272182.

It is a happy number.

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 28127255 - 2² = 28127251 is a prime.

It is a super-2 number, since 2×28127255² = 1582284947670050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28127251) 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, 216299 + ... + 216428.

It is an arithmetic number, because the mean of its divisors is an integer number (4543644).

Almost surely, 2^28127255 is an apocalyptic number.

28127255 is a deficient number, since it is larger than the sum of its proper divisors (8221897).

28127255 is a wasteful number, since it uses less digits than its factorization.

28127255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 432745.

The product of its digits is 11200, while the sum is 32.

The square root of 28127255 is about 5303.5134580766. The cubic root of 28127255 is about 304.1182271855.

It can be divided in two parts, 28127 and 255, that added together give a palindrome (28382).

The spelling of 28127255 in words is "twenty-eight million, one hundred twenty-seven thousand, two hundred fifty-five".