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290238 = 2313612
BaseRepresentation
bin1000110110110111110
3112202010120
41012312332
533241423
610115410
72316114
oct1066676
9482116
10290238
11189073
1211bb66
13a2150
1477ab4
155aee3
hex46dbe

290238 has 24 divisors (see below), whose sum is σ = 635544. Its totient is φ = 87840.

The previous prime is 290233. The next prime is 290243. The reversal of 290238 is 832092.

290238 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (290233) and next prime (290243).

It is a Curzon number.

It is a zygodrome in base 12.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (290233) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4728 + ... + 4788.

It is an arithmetic number, because the mean of its divisors is an integer number (26481).

2290238 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 290238, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (317772).

290238 is an abundant number, since it is smaller than the sum of its proper divisors (345306).

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

290238 is a wasteful number, since it uses less digits than its factorization.

290238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140 (or 79 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 290238 is about 538.7374128460. The cubic root of 290238 is about 66.2091619683.

It can be divided in two parts, 290 and 238, that added together give a triangular number (528 = T32).

The spelling of 290238 in words is "two hundred ninety thousand, two hundred thirty-eight".

Divisors: 1 2 3 6 13 26 39 61 78 122 183 366 793 1586 2379 3721 4758 7442 11163 22326 48373 96746 145119 290238