191289248 has 48 divisors (see below), whose sum is σ = 387192960. Its totient is φ = 92983296.

The previous prime is 191289239. The next prime is 191289299. The reversal of 191289248 is 842982191.

It is a junction number, because it is equal to n+sod(n) for n = 191289199 and 191289208.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 289943 + ... + 290601.

It is an arithmetic number, because the mean of its divisors is an integer number (8066520).

Almost surely, 2^191289248 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 191289248, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (193596480).

191289248 is an abundant number, since it is smaller than the sum of its proper divisors (195903712).

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

191289248 is a wasteful number, since it uses less digits than its factorization.

191289248 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 909 (or 901 counting only the distinct ones).

The product of its digits is 82944, while the sum is 44.

The square root of 191289248 is about 13830.7356275796. The cubic root of 191289248 is about 576.1870855755.

The spelling of 191289248 in words is "one hundred ninety-one million, two hundred eighty-nine thousand, two hundred forty-eight".