28080356372 has 6 divisors (see below), whose sum is σ = 49140623658. Its totient is φ = 14040178184.

The previous prime is 28080356347. The next prime is 28080356389. The reversal of 28080356372 is 27365308082.

It can be written as a sum of positive squares in only one way, i.e., 25870792336 + 2209564036 = 160844^2 + 47006^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3510044543 + ... + 3510044550.

It is an arithmetic number, because the mean of its divisors is an integer number (8190103943).

Almost surely, 2^28080356372 is an apocalyptic number.

It is an amenable number.

28080356372 is a deficient number, since it is larger than the sum of its proper divisors (21060267286).

28080356372 is a wasteful number, since it uses less digits than its factorization.

28080356372 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7020089097 (or 7020089095 counting only the distinct ones).

The product of its (nonzero) digits is 483840, while the sum is 44.

The spelling of 28080356372 in words is "twenty-eight billion, eighty million, three hundred fifty-six thousand, three hundred seventy-two".