28020966444 has 48 divisors (see below), whose sum is σ = 72675036000. Its totient is φ = 9336711168.

The previous prime is 28020966419. The next prime is 28020966451. The reversal of 28020966444 is 44466902082.

It is a self number, because there is not a number n which added to its sum of digits gives 28020966444.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 238132 + ... + 335780.

It is an arithmetic number, because the mean of its divisors is an integer number (1514063250).

Almost surely, 2^28020966444 is an apocalyptic number.

It is an amenable number.

28020966444 is an abundant number, since it is smaller than the sum of its proper divisors (44654069556).

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

28020966444 is a wasteful number, since it uses less digits than its factorization.

28020966444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100319 (or 100311 counting only the distinct ones).

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

The spelling of 28020966444 in words is "twenty-eight billion, twenty million, nine hundred sixty-six thousand, four hundred forty-four".