194390 has 16 divisors (see below), whose sum is σ = 400032. Its totient is φ = 66624.
The previous prime is 194377. The next prime is 194413. The reversal of 194390 is 93491.
It is a happy number.
It is a Curzon number.
It is a congruent number.
It is an unprimeable number.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1319 + ... + 1458.
It is an arithmetic number, because the mean of its divisors is an integer number (25002).
194390 is a Friedman number, since it can be written as (30-9)^4-91, using all its digits and the basic arithmetic operations.
2194390 is an apocalyptic number.
194390 is a gapful number since it is divisible by the number (10) formed by its first and last digit.
194390 is an abundant number, since it is smaller than the sum of its proper divisors (205642).
It is a weird number, because it is abundant, but not a pseudoperfect number.
194390 is a wasteful number, since it uses less digits than its factorization.
194390 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 2791.
The product of its (nonzero) digits is 972, while the sum is 26.
The square root of 194390 is about 440.8968133248. The cubic root of 194390 is about 57.9283697575.
Multiplying 194390 by its product of nonzero digits (972), we get a triangular number (188947080 = T19439).
The spelling of 194390 in words is "one hundred ninety-four thousand, three hundred ninety".
• e-mail: info -at- numbersaplenty.com • Privacy notice • done in 0.065 sec. • engine limits •