Base | Representation |
---|---|
bin | 100110100101… |
… | …1000010000000 |
3 | 1102001210201100 |
4 | 1031023002000 |
5 | 20134332042 |
6 | 2001334400 |
7 | 333645246 |
oct | 115130200 |
9 | 42053640 |
10 | 20230272 |
11 | 10468337 |
12 | 6937400 |
13 | 426419a |
14 | 2988796 |
15 | 1b9924c |
hex | 134b080 |
20230272 has 96 divisors (see below), whose sum is σ = 61698780. Its totient is φ = 6340608.
The previous prime is 20230267. The next prime is 20230297. The reversal of 20230272 is 27203202.
It can be written as a sum of positive squares in 2 ways, for example, as 16451136 + 3779136 = 4056^2 + 1944^2 .
It is a tau number, because it is divible by the number of its divisors (96).
It is a Harshad number since it is a multiple of its sum of digits (18).
It is a congruent number.
It is an unprimeable number.
It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 19068 + ... + 20100.
Almost surely, 220230272 is an apocalyptic number.
It is an amenable number.
It is a practical number, because each smaller number is the sum of distinct divisors of 20230272, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30849390).
20230272 is an abundant number, since it is smaller than the sum of its proper divisors (41468508).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
20230272 is a wasteful number, since it uses less digits than its factorization.
20230272 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 1070 (or 1055 counting only the distinct ones).
The product of its (nonzero) digits is 336, while the sum is 18.
The square root of 20230272 is about 4497.8074658660. The cubic root of 20230272 is about 272.4795462021.
Adding to 20230272 its reverse (27203202), we get a palindrome (47433474).
It can be divided in two parts, 20230 and 272, that added together give a palindrome (20502).
The spelling of 20230272 in words is "twenty million, two hundred thirty thousand, two hundred seventy-two".
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