191038248 has 72 divisors (see below), whose sum is σ = 549680430. Its totient is φ = 59927040.

The previous prime is 191038247. The next prime is 191038249. The reversal of 191038248 is 842830191.

191038248 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (191038247) and next prime (191038249).

It can be written as a sum of positive squares in 3 ways, for example, as 190937124 + 101124 = 13818^2 + 318^2 .

It is a tau number, because it is divible by the number of its divisors (72).

It is a super-2 number, since 2×191038248² = 72991224397819008, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (191038241) 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 17 ways as a sum of consecutive naturals, for example, 16218 + ... + 25398.

Almost surely, 2^191038248 is an apocalyptic number.

191038248 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 191038248, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (274840215).

191038248 is an abundant number, since it is smaller than the sum of its proper divisors (358642182).

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

191038248 is a wasteful number, since it uses less digits than its factorization.

191038248 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9227 (or 9203 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 36.

The square root of 191038248 is about 13821.6586558922. The cubic root of 191038248 is about 575.9349608277.

The spelling of 191038248 in words is "one hundred ninety-one million, thirty-eight thousand, two hundred forty-eight".