191797248 has 192 divisors, whose sum is σ = 566092800. Its totient is φ = 57507840.

The previous prime is 191797241. The next prime is 191797297. The reversal of 191797248 is 842797191.

It is a tau number, because it is divible by the number of its divisors (192).

It is a Harshad number since it is a multiple of its sum of digits (48).

Its product of digits (254016) is a multiple of the sum of its prime divisors (108).

It is a junction number, because it is equal to n+sod(n) for n = 191797197 and 191797206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (191797241) 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 15 ways as a sum of consecutive naturals, for example, 3618790 + ... + 3618842.

It is an arithmetic number, because the mean of its divisors is an integer number (2948400).

Almost surely, 2^191797248 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 191797248, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (283046400).

191797248 is an abundant number, since it is smaller than the sum of its proper divisors (374295552).

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

191797248 is a wasteful number, since it uses less digits than its factorization.

191797248 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128 (or 108 counting only the distinct ones).

The product of its digits is 254016, while the sum is 48.

The square root of 191797248 is about 13849.0883454471. The cubic root of 191797248 is about 576.6966878613.

The spelling of 191797248 in words is "one hundred ninety-one million, seven hundred ninety-seven thousand, two hundred forty-eight".