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194390 = 2572777
BaseRepresentation
bin101111011101010110
3100212122122
4233131112
522210030
64055542
71436510
oct573526
9325578
10194390
11123059
12945b2
136a631
1450bb0
153c8e5
hex2f756

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".

Divisors: 1 2 5 7 10 14 35 70 2777 5554 13885 19439 27770 38878 97195 194390