28030664430 has 96 divisors (see below), whose sum is σ = 73856712384. Its totient is φ = 7375308288.

The previous prime is 28030664407. The next prime is 28030664449. The reversal of 28030664430 is 3446603082.

It is a happy number.

28030664430 is a `hidden beast` number, since 2 + 8 + 0 + 3 + 0 + 6 + 644 + 3 + 0 = 666.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2052304 + ... + 2065916.

It is an arithmetic number, because the mean of its divisors is an integer number (769340754).

Almost surely, 2^28030664430 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28030664430, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36928356192).

28030664430 is an abundant number, since it is smaller than the sum of its proper divisors (45826047954).

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

28030664430 is a wasteful number, since it uses less digits than its factorization.

28030664430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13930 (or 13927 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 36.

The spelling of 28030664430 in words is "twenty-eight billion, thirty million, six hundred sixty-four thousand, four hundred thirty".