| Base | Representation |
|---|---|
| bin | 10000101111001… |
| … | …00110100010000 |
| 3 | 100210011221122000 |
| 4 | 20113210310100 |
| 5 | 241420212330 |
| 6 | 21533114000 |
| 7 | 3323235102 |
| oct | 1027446420 |
| 9 | 323157560 |
| 10 | 140397840 |
| 11 | 72283a80 |
| 12 | 3b028900 |
| 13 | 2311945b |
| 14 | 14909572 |
| 15 | c4d4560 |
| hex | 85e4d10 |
140397840 has 320 divisors, whose sum is σ = 557107200. Its totient is φ = 32140800.
The previous prime is 140397833. The next prime is 140397847. The reversal of 140397840 is 48793041.
It is a happy number.
It is an interprime number because it is at equal distance from previous prime (140397833) and next prime (140397847).
It is a Harshad number since it is a multiple of its sum of digits (36).
It is a junction number, because it is equal to n+sod(n) for n = 140397795 and 140397804.
It is not an unprimeable number, because it can be changed into a prime (140397847) 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 63 ways as a sum of consecutive naturals, for example, 451285 + ... + 451595.
It is an arithmetic number, because the mean of its divisors is an integer number (1740960).
Almost surely, 2140397840 is an apocalyptic number.
140397840 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 140397840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (278553600).
140397840 is an abundant number, since it is smaller than the sum of its proper divisors (416709360).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
140397840 is a wasteful number, since it uses less digits than its factorization.
140397840 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 363 (or 351 counting only the distinct ones).
The product of its (nonzero) digits is 24192, while the sum is 36.
The square root of 140397840 is about 11848.9594479853. The cubic root of 140397840 is about 519.7407978398.
The spelling of 140397840 in words is "one hundred forty million, three hundred ninety-seven thousand, eight hundred forty".
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