| Base | Representation |
|---|---|
| bin | 101001000100110… |
| … | …0110010111010000 |
| 3 | 10120001102021000120 |
| 4 | 1102021212113100 |
| 5 | 10310312420034 |
| 6 | 344432350240 |
| 7 | 46103626110 |
| oct | 12211462720 |
| 9 | 3501367016 |
| 10 | 1378248144 |
| 11 | 647a92259 |
| 12 | 3256a5380 |
| 13 | 18c703b60 |
| 14 | d108d040 |
| 15 | 80ee9c49 |
| hex | 522665d0 |
1378248144 has 160 divisors (see below), whose sum is σ = 4613038080. Its totient is φ = 344342016.
The previous prime is 1378248143. The next prime is 1378248149. The reversal of 1378248144 is 4418428731.
It is a Harshad number since it is a multiple of its sum of digits (42).
It is a nude number because it is divisible by every one of its digits.
It is a junction number, because it is equal to n+sod(n) for n = 1378248096 and 1378248105.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (1378248143) 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 31 ways as a sum of consecutive naturals, for example, 74689 + ... + 91295.
It is an arithmetic number, because the mean of its divisors is an integer number (28831488).
Almost surely, 21378248144 is an apocalyptic number.
1378248144 is a gapful number since it is divisible by the number (14) 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 1378248144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2306519040).
1378248144 is an abundant number, since it is smaller than the sum of its proper divisors (3234789936).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
1378248144 is a wasteful number, since it uses less digits than its factorization.
1378248144 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 16657 (or 16651 counting only the distinct ones).
The product of its digits is 172032, while the sum is 42.
The square root of 1378248144 is about 37124.7645649100. The cubic root of 1378248144 is about 1112.8649697460.
The spelling of 1378248144 in words is "one billion, three hundred seventy-eight million, two hundred forty-eight thousand, one hundred forty-four".
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