194040 has 144 divisors (see below), whose sum is σ = 800280. Its totient is φ = 40320.

The previous prime is 194027. The next prime is 194057. The reversal of 194040 is 40491.

194040 = 4² + 5² + ... + 83².

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 17635 + ... + 17645.

2¹⁹⁴⁰⁴⁰ is an apocalyptic number.

194040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a pronic number, being equal to 440×441.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 194040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (400140).

194040 is an abundant number, since it is smaller than the sum of its proper divisors (606240).

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

194040 is a wasteful number, since it uses less digits than its factorization.

194040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42 (or 28 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 194040 is about 440.4997162315. The cubic root of 194040 is about 57.8935821141.

The spelling of 194040 in words is "one hundred ninety-four thousand, forty".