28403222912 has 16 divisors (see below), whose sum is σ = 56584545900. Its totient is φ = 14201611392.

The previous prime is 28403222909. The next prime is 28403222927. The reversal of 28403222912 is 21922230482.

It is a tau number, because it is divible by the number of its divisors (16).

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 as a sum of consecutive naturals, namely, 110949962 + ... + 110950217.

Almost surely, 2^28403222912 is an apocalyptic number.

It is an amenable number.

28403222912 is a deficient number, since it is larger than the sum of its proper divisors (28181322988).

28403222912 is an equidigital number, since it uses as much as digits as its factorization.

28403222912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 221900193 (or 221900181 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 35.

The spelling of 28403222912 in words is "twenty-eight billion, four hundred three million, two hundred twenty-two thousand, nine hundred twelve".