28219320011 has 8 divisors (see below), whose sum is σ = 30996049920. Its totient is φ = 25571740392.

The previous prime is 28219319993. The next prime is 28219320089. The reversal of 28219320011 is 11002391282.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28219320011 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28219320211) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32287115 + ... + 32287988.

It is an arithmetic number, because the mean of its divisors is an integer number (3874506240).

Almost surely, 2^28219320011 is an apocalyptic number.

28219320011 is a deficient number, since it is larger than the sum of its proper divisors (2776729909).

28219320011 is a wasteful number, since it uses less digits than its factorization.

28219320011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64575145.

The product of its (nonzero) digits is 1728, while the sum is 29.

The spelling of 28219320011 in words is "twenty-eight billion, two hundred nineteen million, three hundred twenty thousand, eleven".