191280 has 40 divisors (see below), whose sum is σ = 593712. Its totient is φ = 50944.

The previous prime is 191251. The next prime is 191281. The reversal of 191280 is 82191.

191280 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (40).

It is not an unprimeable number, because it can be changed into a prime (191281) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 159 + ... + 638.

2¹⁹¹²⁸⁰ is an apocalyptic number.

191280 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

191280 is an abundant number, since it is smaller than the sum of its proper divisors (402432).

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

191280 is a wasteful number, since it uses less digits than its factorization.

191280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 813 (or 807 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 21.

The square root of 191280 is about 437.3556904854. The cubic root of 191280 is about 57.6177800049.

The spelling of 191280 in words is "one hundred ninety-one thousand, two hundred eighty".