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23030 = 257247
BaseRepresentation
bin101100111110110
31011120222
411213312
51214110
6254342
7124100
oct54766
934528
1023030
1116337
12113b2
13a637
148570
156c55
hex59f6

23030 has 24 divisors (see below), whose sum is σ = 49248. Its totient is φ = 7728.

The previous prime is 23029. The next prime is 23039. The reversal of 23030 is 3032.

It is an alternating number because its digits alternate between even and odd.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 22999 and 23017.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23039) 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, 467 + ... + 513.

It is an arithmetic number, because the mean of its divisors is an integer number (2052).

223030 is an apocalyptic number.

23030 is an abundant number, since it is smaller than the sum of its proper divisors (26218).

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

It is a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24624).

23030 is a wasteful number, since it uses less digits than its factorization.

23030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68 (or 61 counting only the distinct ones).

The product of its (nonzero) digits is 18, while the sum is 8.

The square root of 23030 is about 151.7563837208. The cubic root of 23030 is about 28.4510290655.

Adding to 23030 its reverse (3032), we get a palindrome (26062).

The spelling of 23030 in words is "twenty-three thousand, thirty".

Divisors: 1 2 5 7 10 14 35 47 49 70 94 98 235 245 329 470 490 658 1645 2303 3290 4606 11515 23030