28360770211 has 4 divisors (see below), whose sum is σ = 29127277552. Its totient is φ = 27594262872.

The previous prime is 28360770101. The next prime is 28360770259. The reversal of 28360770211 is 11207706382.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 28360770211 - 2⁷ = 28360770083 is a prime.

It is a super-2 number, since 2×28360770211² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (37), and also a Moran number because the ratio is a prime number: 766507303 = 28360770211 / (2 + 8 + 3 + 6 + 0 + 7 + 7 + 0 + 2 + 1 + 1).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28360770281) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 383253615 + ... + 383253688.

It is an arithmetic number, because the mean of its divisors is an integer number (7281819388).

Almost surely, 2^28360770211 is an apocalyptic number.

28360770211 is a deficient number, since it is larger than the sum of its proper divisors (766507341).

28360770211 is an equidigital number, since it uses as much as digits as its factorization.

28360770211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 766507340.

The product of its (nonzero) digits is 28224, while the sum is 37.

The spelling of 28360770211 in words is "twenty-eight billion, three hundred sixty million, seven hundred seventy thousand, two hundred eleven".