28106267211 has 24 divisors (see below), whose sum is σ = 45717335040. Its totient is φ = 16484612400.

The previous prime is 28106267201. The next prime is 28106267227. The reversal of 28106267211 is 11276260182.

28106267211 is a `hidden beast` number, since 2 + 8 + 1 + 0 + 626 + 7 + 21 + 1 = 666.

It is not a de Polignac number, because 28106267211 - 2⁷ = 28106267083 is a prime.

It is a super-2 number, since 2×28106267211² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (28106267201) 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 23 ways as a sum of consecutive naturals, for example, 4575991 + ... + 4582128.

It is an arithmetic number, because the mean of its divisors is an integer number (1904888960).

Almost surely, 2^28106267211 is an apocalyptic number.

28106267211 is a deficient number, since it is larger than the sum of its proper divisors (17611067829).

28106267211 is a wasteful number, since it uses less digits than its factorization.

28106267211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9158167 (or 9158164 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 36.

The spelling of 28106267211 in words is "twenty-eight billion, one hundred six million, two hundred sixty-seven thousand, two hundred eleven".