| Base | Representation |
|---|---|
| bin | 10000101111001… |
| … | …10101000100000 |
| 3 | 100210012022211120 |
| 4 | 20113212220200 |
| 5 | 241420432110 |
| 6 | 21533212240 |
| 7 | 3323265561 |
| oct | 1027465040 |
| 9 | 323168746 |
| 10 | 140405280 |
| 11 | 72289624 |
| 12 | 3b031080 |
| 13 | 2311c962 |
| 14 | 1490c168 |
| 15 | c4d6870 |
| hex | 85e6a20 |
140405280 has 96 divisors (see below), whose sum is σ = 448447104. Its totient is φ = 36919296.
The previous prime is 140405173. The next prime is 140405297. The reversal of 140405280 is 82504041.
140405280 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.
It is a tau number, because it is divible by the number of its divisors (96).
It is a Harshad number since it is a multiple of its sum of digits (24).
It is a self number, because there is not a number n which added to its sum of digits gives 140405280.
It is an unprimeable number.
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, 33037 + ... + 37043.
It is an arithmetic number, because the mean of its divisors is an integer number (4671324).
Almost surely, 2140405280 is an apocalyptic number.
140405280 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 140405280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (224223552).
140405280 is an abundant number, since it is smaller than the sum of its proper divisors (308041824).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
140405280 is a wasteful number, since it uses less digits than its factorization.
140405280 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 4098 (or 4090 counting only the distinct ones).
The product of its (nonzero) digits is 1280, while the sum is 24.
The square root of 140405280 is about 11849.2733954450. The cubic root of 140405280 is about 519.7499784255.
The spelling of 140405280 in words is "one hundred forty million, four hundred five thousand, two hundred eighty".
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