191456 has 24 divisors (see below), whose sum is σ = 391104. Its totient is φ = 92160.

The previous prime is 191453. The next prime is 191459. The reversal of 191456 is 654191.

191456 = T₉₃ + T₉₄ + ... + T₁₂₄.

It is an interprime number because it is at equal distance from previous prime (191453) and next prime (191459).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (191453) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 896 + ... + 1088.

It is an arithmetic number, because the mean of its divisors is an integer number (16296).

2¹⁹¹⁴⁵⁶ is an apocalyptic number.

191456 is a gapful number since it is divisible by the number (16) 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 191456, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (195552).

191456 is an abundant number, since it is smaller than the sum of its proper divisors (199648).

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

191456 is a wasteful number, since it uses less digits than its factorization.

191456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 234 (or 226 counting only the distinct ones).

The product of its digits is 1080, while the sum is 26.

The square root of 191456 is about 437.5568534488. The cubic root of 191456 is about 57.6354462893.

The spelling of 191456 in words is "one hundred ninety-one thousand, four hundred fifty-six".