191448 has 24 divisors (see below), whose sum is σ = 518700. Its totient is φ = 63792.

The previous prime is 191447. The next prime is 191449. The reversal of 191448 is 844191.

It is an interprime number because it is at equal distance from previous prime (191447) and next prime (191449).

It is a tau number, because it is divible by the number of its divisors (24).

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (191441) 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 5 ways as a sum of consecutive naturals, for example, 1258 + ... + 1401.

2¹⁹¹⁴⁴⁸ is an apocalyptic number.

191448 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

191448 is an abundant number, since it is smaller than the sum of its proper divisors (327252).

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

191448 is a wasteful number, since it uses less digits than its factorization.

191448 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2671 (or 2664 counting only the distinct ones).

The product of its digits is 1152, while the sum is 27.

The square root of 191448 is about 437.5477116841. The cubic root of 191448 is about 57.6346435113.

The spelling of 191448 in words is "one hundred ninety-one thousand, four hundred forty-eight".