28219026106 has 8 divisors (see below), whose sum is σ = 42493242420. Its totient is φ = 14054611968.

The previous prime is 28219026083. The next prime is 28219026107. The reversal of 28219026106 is 60162091282.

It can be written as a sum of positive squares in 2 ways, for example, as 27925417881 + 293608225 = 167109^2 + 17135^2 .

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

It is a super-2 number, since 2×28219026106² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (28219026107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27449901 + ... + 27450928.

Almost surely, 2^28219026106 is an apocalyptic number.

28219026106 is a deficient number, since it is larger than the sum of its proper divisors (14274216314).

28219026106 is a wasteful number, since it uses less digits than its factorization.

28219026106 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54901088.

The product of its (nonzero) digits is 20736, while the sum is 37.

The spelling of 28219026106 in words is "twenty-eight billion, two hundred nineteen million, twenty-six thousand, one hundred six".