| Base | Representation |
|---|---|
| bin | 10001001111111… |
| … | …10100001100000 |
| 3 | 101002021101120110 |
| 4 | 20213332201200 |
| 5 | 244020304230 |
| 6 | 22205211320 |
| 7 | 3404623266 |
| oct | 1047764140 |
| 9 | 332241513 |
| 10 | 144697440 |
| 11 | 74750368 |
| 12 | 40560b40 |
| 13 | 23c934b4 |
| 14 | 15308436 |
| 15 | ca834b0 |
| hex | 89fe860 |
144697440 has 96 divisors (see below), whose sum is σ = 457470720. Its totient is φ = 38444544.
The previous prime is 144697433. The next prime is 144697447. The reversal of 144697440 is 44796441.
It is an interprime number because it is at equal distance from previous prime (144697433) and next prime (144697447).
It is a tau number, because it is divible by the number of its divisors (96).
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (144697447) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (13) of ones.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 233451 + ... + 234069.
It is an arithmetic number, because the mean of its divisors is an integer number (4765320).
Almost surely, 2144697440 is an apocalyptic number.
144697440 is a gapful number since it is divisible by the number (10) 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 144697440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (228735360).
144697440 is an abundant number, since it is smaller than the sum of its proper divisors (312773280).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
144697440 is a wasteful number, since it uses less digits than its factorization.
144697440 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 1124 (or 1116 counting only the distinct ones).
The product of its (nonzero) digits is 96768, while the sum is 39.
The square root of 144697440 is about 12029.0248981370. The cubic root of 144697440 is about 524.9931246265.
Subtracting from 144697440 its reverse (44796441), we obtain a palindrome (99900999).
The spelling of 144697440 in words is "one hundred forty-four million, six hundred ninety-seven thousand, four hundred forty".
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