28865555430 has 16 divisors (see below), whose sum is σ = 69277333104. Its totient is φ = 7697481440.

The previous prime is 28865555423. The next prime is 28865555471. The reversal of 28865555430 is 3455556882.

It is a happy number.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 481092561 + ... + 481092620.

It is an arithmetic number, because the mean of its divisors is an integer number (4329833319).

Almost surely, 2^28865555430 is an apocalyptic number.

28865555430 is an abundant number, since it is smaller than the sum of its proper divisors (40411777674).

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

28865555430 is a wasteful number, since it uses less digits than its factorization.

28865555430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 962185191.

The product of its (nonzero) digits is 5760000, while the sum is 51.

The spelling of 28865555430 in words is "twenty-eight billion, eight hundred sixty-five million, five hundred fifty-five thousand, four hundred thirty".