Search a number
-
+
290438 = 2145219
BaseRepresentation
bin1000110111010000110
3112202101222
41012322012
533243223
610120342
72316521
oct1067206
9482358
10290438
11189235
121200b2
13a2275
1477bb8
155b0c8
hex46e86

290438 has 4 divisors (see below), whose sum is σ = 435660. Its totient is φ = 145218.

The previous prime is 290429. The next prime is 290441. The reversal of 290438 is 834092.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72608 + ... + 72611.

It is an arithmetic number, because the mean of its divisors is an integer number (108915).

2290438 is an apocalyptic number.

290438 is a deficient number, since it is larger than the sum of its proper divisors (145222).

290438 is a wasteful number, since it uses less digits than its factorization.

290438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145221.

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 290438 is about 538.9230000659. The cubic root of 290438 is about 66.2243664923.

The spelling of 290438 in words is "two hundred ninety thousand, four hundred thirty-eight".

Divisors: 1 2 145219 290438