Base | Representation |
---|---|
bin | 11101100000011… |
… | …10001110110110 |
3 | 122020202102200000 |
4 | 32300032032312 |
5 | 1001331202410 |
6 | 40321132130 |
7 | 6063622104 |
oct | 1660161666 |
9 | 566672600 |
10 | 247522230 |
11 | 1177a112a |
12 | 6aa8a046 |
13 | 3c385977 |
14 | 24c32c74 |
15 | 16ae4dc0 |
hex | ec0e3b6 |
247522230 has 96 divisors (see below), whose sum is σ = 685679904. Its totient is φ = 64198656.
The previous prime is 247522217. The next prime is 247522241. The reversal of 247522230 is 32225742.
It is a super-2 number, since 2×2475222302 = 122534508688345800, which contains 22 as substring.
It is a Harshad number since it is a multiple of its sum of digits (27).
It is a junction number, because it is equal to n+sod(n) for n = 247522194 and 247522203.
It is a congruent number.
It is an unprimeable number.
It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 88534 + ... + 91286.
It is an arithmetic number, because the mean of its divisors is an integer number (7142499).
Almost surely, 2247522230 is an apocalyptic number.
It is a practical number, because each smaller number is the sum of distinct divisors of 247522230, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (342839952).
247522230 is an abundant number, since it is smaller than the sum of its proper divisors (438157674).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
247522230 is a wasteful number, since it uses less digits than its factorization.
247522230 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 2812 (or 2800 counting only the distinct ones).
The product of its (nonzero) digits is 6720, while the sum is 27.
The square root of 247522230 is about 15732.8392224671. The cubic root of 247522230 is about 627.8724148160.
Adding to 247522230 its reverse (32225742), we get a palindrome (279747972).
The spelling of 247522230 in words is "two hundred forty-seven million, five hundred twenty-two thousand, two hundred thirty".
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