28464255228 has 24 divisors (see below), whose sum is σ = 66484188288. Its totient is φ = 9478428976.

The previous prime is 28464255223. The next prime is 28464255241. The reversal of 28464255228 is 82255246482.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28464255223) 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, 1194726 + ... + 1218317.

It is an arithmetic number, because the mean of its divisors is an integer number (2770174512).

Almost surely, 2^28464255228 is an apocalyptic number.

It is an amenable number.

28464255228 is an abundant number, since it is smaller than the sum of its proper divisors (38019933060).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28464255228 is a wasteful number, since it uses less digits than its factorization.

28464255228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2414033 (or 2414031 counting only the distinct ones).

The product of its digits is 2457600, while the sum is 48.

The spelling of 28464255228 in words is "twenty-eight billion, four hundred sixty-four million, two hundred fifty-five thousand, two hundred twenty-eight".