| Base | Representation |
|---|---|
| bin | 101001001000011… |
| … | …0110000011110000 |
| 3 | 10120011222202100212 |
| 4 | 1102100312003300 |
| 5 | 10311304204230 |
| 6 | 344541203252 |
| 7 | 46126026320 |
| oct | 12220660360 |
| 9 | 3504882325 |
| 10 | 1380147440 |
| 11 | 64906a221 |
| 12 | 326260528 |
| 13 | 18cc1a4b9 |
| 14 | d1425280 |
| 15 | 81272895 |
| hex | 524360f0 |
1380147440 has 80 divisors (see below), whose sum is σ = 3675859968. Its totient is φ = 472082688.
The previous prime is 1380147437. The next prime is 1380147443. The reversal of 1380147440 is 447410831.
It is an interprime number because it is at equal distance from previous prime (1380147437) and next prime (1380147443).
It is a tau number, because it is divible by the number of its divisors (80).
It is a super-3 number, since 3×13801474403 (a number of 28 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.
It is a junction number, because it is equal to n+sod(n) for n = 1380147397 and 1380147406.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (1380147443) by changing a digit.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 256619 + ... + 261941.
Almost surely, 21380147440 is an apocalyptic number.
1380147440 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 1380147440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1837929984).
1380147440 is an abundant number, since it is smaller than the sum of its proper divisors (2295712528).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
1380147440 is a wasteful number, since it uses less digits than its factorization.
1380147440 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 5806 (or 5800 counting only the distinct ones).
The product of its (nonzero) digits is 10752, while the sum is 32.
The square root of 1380147440 is about 37150.3356647016. The cubic root of 1380147440 is about 1113.3759299402.
The spelling of 1380147440 in words is "one billion, three hundred eighty million, one hundred forty-seven thousand, four hundred forty".
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