28263770105 has 32 divisors (see below), whose sum is σ = 34881310464. Its totient is φ = 21978418176.

The previous prime is 28263770021. The next prime is 28263770111. The reversal of 28263770105 is 50107736282.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28263770105 is a prime.

It is a super-2 number, since 2×28263770105² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10798757 + ... + 10801373.

It is an arithmetic number, because the mean of its divisors is an integer number (1090040952).

Almost surely, 2^28263770105 is an apocalyptic number.

It is an amenable number.

28263770105 is a deficient number, since it is larger than the sum of its proper divisors (6617540359).

28263770105 is a wasteful number, since it uses less digits than its factorization.

28263770105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3105.

The product of its (nonzero) digits is 141120, while the sum is 41.

The spelling of 28263770105 in words is "twenty-eight billion, two hundred sixty-three million, seven hundred seventy thousand, one hundred five".