28939225392 has 540 divisors, whose sum is σ = 108207376368. Its totient is φ = 7065907200.

The previous prime is 28939225351. The next prime is 28939225417. The reversal of 28939225392 is 29352293982.

28939225392 is a `hidden beast` number, since 2 + 89 + 3 + 9 + 22 + 539 + 2 = 666.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 107 ways as a sum of consecutive naturals, for example, 35248342 + ... + 35249162.

Almost surely, 2^28939225392 is an apocalyptic number.

28939225392 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28939225392, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (54103688184).

28939225392 is an abundant number, since it is smaller than the sum of its proper divisors (79268150976).

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

28939225392 is a wasteful number, since it uses less digits than its factorization.

28939225392 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 898 (or 861 counting only the distinct ones).

The product of its digits is 4199040, while the sum is 54.

The spelling of 28939225392 in words is "twenty-eight billion, nine hundred thirty-nine million, two hundred twenty-five thousand, three hundred ninety-two".