28722055216 has 10 divisors (see below), whose sum is σ = 55648982012. Its totient is φ = 14361027600.

The previous prime is 28722055199. The next prime is 28722055259. The reversal of 28722055216 is 61255022782.

It is a super-3 number, since 3×28722055216³ (a number of 32 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 897564210 + ... + 897564241.

Almost surely, 2^28722055216 is an apocalyptic number.

It is an amenable number.

28722055216 is a deficient number, since it is larger than the sum of its proper divisors (26926926796).

28722055216 is a wasteful number, since it uses less digits than its factorization.

28722055216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1795128459 (or 1795128453 counting only the distinct ones).

The product of its (nonzero) digits is 134400, while the sum is 40.

Adding to 28722055216 its reverse (61255022782), we get a palindrome (89977077998).

The spelling of 28722055216 in words is "twenty-eight billion, seven hundred twenty-two million, fifty-five thousand, two hundred sixteen".