28605838228 has 12 divisors (see below), whose sum is σ = 54611145792. Its totient is φ = 13002653720.

The previous prime is 28605838213. The next prime is 28605838229. The reversal of 28605838228 is 82283850682.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28605838229) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 325066300 + ... + 325066387.

It is an arithmetic number, because the mean of its divisors is an integer number (4550928816).

Almost surely, 2^28605838228 is an apocalyptic number.

It is an amenable number.

28605838228 is a deficient number, since it is larger than the sum of its proper divisors (26005307564).

28605838228 is a wasteful number, since it uses less digits than its factorization.

28605838228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 650132702 (or 650132700 counting only the distinct ones).

The product of its (nonzero) digits is 2949120, while the sum is 52.

The spelling of 28605838228 in words is "twenty-eight billion, six hundred five million, eight hundred thirty-eight thousand, two hundred twenty-eight".