28872255 has 16 divisors (see below), whose sum is σ = 47789280. Its totient is φ = 14867328.

The previous prime is 28872251. The next prime is 28872271. The reversal of 28872255 is 55227882.

It is a happy number.

It is not a de Polignac number, because 28872255 - 2² = 28872251 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28872251) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32752 + ... + 33621.

It is an arithmetic number, because the mean of its divisors is an integer number (2986830).

Almost surely, 2^28872255 is an apocalyptic number.

28872255 is a deficient number, since it is larger than the sum of its proper divisors (18917025).

28872255 is a wasteful number, since it uses less digits than its factorization.

28872255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66410.

The product of its digits is 89600, while the sum is 39.

The square root of 28872255 is about 5373.2908910648. The cubic root of 28872255 is about 306.7799000299.

The spelling of 28872255 in words is "twenty-eight million, eight hundred seventy-two thousand, two hundred fifty-five".