28255135 has 8 divisors (see below), whose sum is σ = 35075520. Its totient is φ = 21824544.

The previous prime is 28255127. The next prime is 28255141. The reversal of 28255135 is 53155282.

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 28255135 - 2³ = 28255127 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 28255097 and 28255106.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 97287 + ... + 97576.

It is an arithmetic number, because the mean of its divisors is an integer number (4384440).

Almost surely, 2^28255135 is an apocalyptic number.

28255135 is a deficient number, since it is larger than the sum of its proper divisors (6820385).

28255135 is a wasteful number, since it uses less digits than its factorization.

28255135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 194897.

The product of its digits is 12000, while the sum is 31.

The square root of 28255135 is about 5315.5559445838. Note that the first 3 decimals coincide. The cubic root of 28255135 is about 304.5784196075.

The spelling of 28255135 in words is "twenty-eight million, two hundred fifty-five thousand, one hundred thirty-five".