28032944328 has 192 divisors, whose sum is σ = 80750741760. Its totient is φ = 8773567488.

The previous prime is 28032944327. The next prime is 28032944371. The reversal of 28032944328 is 82344923082.

28032944328 is a `hidden beast` number, since 280 + 3 + 2 + 9 + 44 + 328 = 666.

It is not an unprimeable number, because it can be changed into a prime (28032944323) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 9138651 + ... + 9141717.

It is an arithmetic number, because the mean of its divisors is an integer number (420576780).

Almost surely, 2^28032944328 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28032944328, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40375370880).

28032944328 is an abundant number, since it is smaller than the sum of its proper divisors (52717797432).

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

28032944328 is a wasteful number, since it uses less digits than its factorization.

28032944328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3236 (or 3229 counting only the distinct ones).

The product of its (nonzero) digits is 663552, while the sum is 45.

The spelling of 28032944328 in words is "twenty-eight billion, thirty-two million, nine hundred forty-four thousand, three hundred twenty-eight".