Base | Representation |
---|---|
bin | 11101000101011… |
… | …10000010010000 |
3 | 122000002121001011 |
4 | 32202232002100 |
5 | 444424414410 |
6 | 40113220304 |
7 | 6021550120 |
oct | 1642560220 |
9 | 560077034 |
10 | 243982480 |
11 | 1157a3715 |
12 | 69861694 |
13 | 3b716741 |
14 | 24590c80 |
15 | 1664618a |
hex | e8ae090 |
243982480 has 80 divisors (see below), whose sum is σ = 650386944. Its totient is φ = 83381760.
The previous prime is 243982469. The next prime is 243982489. The reversal of 243982480 is 84289342.
It is a tau number, because it is divible by the number of its divisors (80).
It is a Harshad number since it is a multiple of its sum of digits (40).
It is not an unprimeable number, because it can be changed into a prime (243982489) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (11) of ones.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 258810 + ... + 259750.
Almost surely, 2243982480 is an apocalyptic number.
243982480 is a gapful number since it is divisible by the number (20) formed by its first and last digit.
It is an amenable number.
It is a practical number, because each smaller number is the sum of distinct divisors of 243982480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (325193472).
243982480 is an abundant number, since it is smaller than the sum of its proper divisors (406404464).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
243982480 is a wasteful number, since it uses less digits than its factorization.
243982480 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 1424 (or 1418 counting only the distinct ones).
The product of its (nonzero) digits is 110592, while the sum is 40.
The square root of 243982480 is about 15619.9385402120. The cubic root of 243982480 is about 624.8650204509.
The spelling of 243982480 in words is "two hundred forty-three million, nine hundred eighty-two thousand, four hundred eighty".
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