191566112 has 48 divisors (see below), whose sum is σ = 402796800. Its totient is φ = 89483520.

The previous prime is 191566093. The next prime is 191566117. The reversal of 191566112 is 211665191.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is not an unprimeable number, because it can be changed into a prime (191566117) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25439 + ... + 32097.

It is an arithmetic number, because the mean of its divisors is an integer number (8391600).

Almost surely, 2^191566112 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 191566112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (201398400).

191566112 is an abundant number, since it is smaller than the sum of its proper divisors (211230688).

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

191566112 is a wasteful number, since it uses less digits than its factorization.

191566112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6729 (or 6721 counting only the distinct ones).

The product of its digits is 3240, while the sum is 32.

The square root of 191566112 is about 13840.7410206246. The cubic root of 191566112 is about 576.4649345421.

The spelling of 191566112 in words is "one hundred ninety-one million, five hundred sixty-six thousand, one hundred twelve".