28080022072 has 32 divisors (see below), whose sum is σ = 53205350400. Its totient is φ = 13892516064.

The previous prime is 28080022049. The next prime is 28080022097. The reversal of 28080022072 is 27022008082.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 348603 + ... + 421525.

It is an arithmetic number, because the mean of its divisors is an integer number (1662667200).

Almost surely, 2^28080022072 is an apocalyptic number.

It is an amenable number.

28080022072 is a deficient number, since it is larger than the sum of its proper divisors (25125328328).

28080022072 is a wasteful number, since it uses less digits than its factorization.

28080022072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73435 (or 73431 counting only the distinct ones).

The product of its (nonzero) digits is 7168, while the sum is 31.

The spelling of 28080022072 in words is "twenty-eight billion, eighty million, twenty-two thousand, seventy-two".