28255678 has 24 divisors (see below), whose sum is σ = 47487384. Its totient is φ = 12595440.

The previous prime is 28255673. The next prime is 28255691. The reversal of 28255678 is 87655282.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28255673) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11725 + ... + 13927.

It is an arithmetic number, because the mean of its divisors is an integer number (1978641).

Almost surely, 2^28255678 is an apocalyptic number.

28255678 is a deficient number, since it is larger than the sum of its proper divisors (19231706).

28255678 is a wasteful number, since it uses less digits than its factorization.

28255678 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2280 (or 2269 counting only the distinct ones).

The product of its digits is 268800, while the sum is 43.

The square root of 28255678 is about 5315.6070208397. The cubic root of 28255678 is about 304.5803706985.

The spelling of 28255678 in words is "twenty-eight million, two hundred fifty-five thousand, six hundred seventy-eight".