111928005 has 72 divisors (see below), whose sum is σ = 235602432. Its totient is φ = 48920256.

The previous prime is 111928001. The next prime is 111928013. The reversal of 111928005 is 500829111.

It is not a de Polignac number, because 111928005 - 2² = 111928001 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 111928005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111928001) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 49612 + ... + 51818.

It is an arithmetic number, because the mean of its divisors is an integer number (3272256).

Almost surely, 2^111928005 is an apocalyptic number.

111928005 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

111928005 is an abundant number, since it is smaller than the sum of its proper divisors (123674427).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

111928005 is a wasteful number, since it uses less digits than its factorization.

111928005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2255 (or 2245 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 27.

The square root of 111928005 is about 10579.6032534306. The cubic root of 111928005 is about 481.9251460580.

The spelling of 111928005 in words is "one hundred eleven million, nine hundred twenty-eight thousand, five".