28577255 has 16 divisors (see below), whose sum is σ = 41497920. Its totient is φ = 18442752.

The previous prime is 28577249. The next prime is 28577303. The reversal of 28577255 is 55277582.

It is a cyclic number.

It is not a de Polignac number, because 28577255 - 2⁶ = 28577191 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23420 + ... + 24609.

It is an arithmetic number, because the mean of its divisors is an integer number (2593620).

Almost surely, 2^28577255 is an apocalyptic number.

28577255 is a deficient number, since it is larger than the sum of its proper divisors (12920665).

28577255 is a wasteful number, since it uses less digits than its factorization.

28577255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48058.

The product of its digits is 196000, while the sum is 41.

The square root of 28577255 is about 5345.7698229535. The cubic root of 28577255 is about 305.7314880059.

The spelling of 28577255 in words is "twenty-eight million, five hundred seventy-seven thousand, two hundred fifty-five".