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BaseRepresentation
bin111000010001011010
3102201011200
4320101122
524333430
64535030
71646661
oct702132
9381150
10230490
11148197
12b1476
1380bb0
145ddd8
1548460
hex3845a

230490 has 48 divisors (see below), whose sum is σ = 648648. Its totient is φ = 56448.

The previous prime is 230479. The next prime is 230501. The reversal of 230490 is 94032.

It is an interprime number because it is at equal distance from previous prime (230479) and next prime (230501).

It can be written as a sum of positive squares in 4 ways, for example, as 205209 + 25281 = 453^2 + 159^2 .

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

It is a Curzon number.

It is an unprimeable number.

230490 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1072 + ... + 1268.

2230490 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 230490, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (324324).

230490 is an abundant number, since it is smaller than the sum of its proper divisors (418158).

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

230490 is a wasteful number, since it uses less digits than its factorization.

230490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 223 (or 220 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 230490 is about 480.0937408465. The cubic root of 230490 is about 61.3127359423.

The spelling of 230490 in words is "two hundred thirty thousand, four hundred ninety".