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23020 = 2251151
BaseRepresentation
bin101100111101100
31011120121
411213230
51214040
6254324
7124054
oct54754
934517
1023020
1116328
12113a4
13a62a
148564
156c4a
hex59ec

23020 has 12 divisors (see below), whose sum is σ = 48384. Its totient is φ = 9200.

The previous prime is 23017. The next prime is 23021. The reversal of 23020 is 2032.

It is a junction number, because it is equal to n+sod(n) for n = 22994 and 23012.

It is not an unprimeable number, because it can be changed into a prime (23021) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 556 + ... + 595.

It is an arithmetic number, because the mean of its divisors is an integer number (4032).

223020 is an apocalyptic number.

23020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23020 is an abundant number, since it is smaller than the sum of its proper divisors (25364).

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 (24192).

23020 is a wasteful number, since it uses less digits than its factorization.

23020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1160 (or 1158 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 7.

The square root of 23020 is about 151.7234326002. The cubic root of 23020 is about 28.4469105031.

Adding to 23020 its product of nonzero digits (12), we get a palindrome (23032).

Adding to 23020 its reverse (2032), we get a palindrome (25052).

The spelling of 23020 in words is "twenty-three thousand, twenty", and thus it is an iban number.

Divisors: 1 2 4 5 10 20 1151 2302 4604 5755 11510 23020