28330233012 has 36 divisors (see below), whose sum is σ = 71619685956. Its totient is φ = 9442467840.

The previous prime is 28330232993. The next prime is 28330233037. The reversal of 28330233012 is 21033203382.

28330233012 is a `hidden beast` number, since 2 + 8 + 330 + 23 + 301 + 2 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 11356312356 + 16973920656 = 106566^2 + 130284^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 390562 + ... + 457382.

It is an arithmetic number, because the mean of its divisors is an integer number (1989435721).

Almost surely, 2^28330233012 is an apocalyptic number.

It is an amenable number.

28330233012 is an abundant number, since it is smaller than the sum of its proper divisors (43289452944).

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

28330233012 is a wasteful number, since it uses less digits than its factorization.

28330233012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78608 (or 78603 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 27.

Adding to 28330233012 its reverse (21033203382), we get a palindrome (49363436394).

The spelling of 28330233012 in words is "twenty-eight billion, three hundred thirty million, two hundred thirty-three thousand, twelve".