191088056 has 8 divisors (see below), whose sum is σ = 358290120. Its totient is φ = 95544024.

The previous prime is 191088013. The next prime is 191088059. The reversal of 191088056 is 650880191.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (191088059) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11942996 + ... + 11943011.

It is an arithmetic number, because the mean of its divisors is an integer number (44786265).

Almost surely, 2^191088056 is an apocalyptic number.

It is an amenable number.

191088056 is a deficient number, since it is larger than the sum of its proper divisors (167202064).

191088056 is a wasteful number, since it uses less digits than its factorization.

191088056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23886013 (or 23886009 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 38.

The square root of 191088056 is about 13823.4603482630. The cubic root of 191088056 is about 575.9850095764.

The spelling of 191088056 in words is "one hundred ninety-one million, eighty-eight thousand, fifty-six".