194540 has 24 divisors (see below), whose sum is σ = 417312. Its totient is φ = 76160.

The previous prime is 194527. The next prime is 194543. The reversal of 194540 is 45491.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (194543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1352 + ... + 1488.

It is an arithmetic number, because the mean of its divisors is an integer number (17388).

2¹⁹⁴⁵⁴⁰ is an apocalyptic number.

194540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

194540 is an abundant number, since it is smaller than the sum of its proper divisors (222772).

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

194540 is a wasteful number, since it uses less digits than its factorization.

194540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 217 (or 215 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 194540 is about 441.0668883514. The cubic root of 194540 is about 57.9432659651.

The spelling of 194540 in words is "one hundred ninety-four thousand, five hundred forty".