| Base | Representation |
|---|---|
| bin | 10000101111011… |
| … | …10100011100000 |
| 3 | 100210020222100100 |
| 4 | 20113232203200 |
| 5 | 241423001403 |
| 6 | 21534022400 |
| 7 | 3323462304 |
| oct | 1027564340 |
| 9 | 323228310 |
| 10 | 140437728 |
| 11 | 72300a42 |
| 12 | 3b047a00 |
| 13 | 23131662 |
| 14 | 14919d04 |
| 15 | c4e12a3 |
| hex | 85ee8e0 |
140437728 has 72 divisors (see below), whose sum is σ = 403930800. Its totient is φ = 46278144.
The previous prime is 140437727. The next prime is 140437729. The reversal of 140437728 is 827734041.
It is a happy number.
It is an interprime number because it is at equal distance from previous prime (140437727) and next prime (140437729).
It is a tau number, because it is divible by the number of its divisors (72).
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 = 140437692 and 140437701.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (140437723) 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 11 ways as a sum of consecutive naturals, for example, 22893 + ... + 28371.
It is an arithmetic number, because the mean of its divisors is an integer number (5610150).
Almost surely, 2140437728 is an apocalyptic number.
140437728 is a gapful number since it is divisible by the number (18) 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 140437728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (201965400).
140437728 is an abundant number, since it is smaller than the sum of its proper divisors (263493072).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
140437728 is a wasteful number, since it uses less digits than its factorization.
140437728 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 5584 (or 5573 counting only the distinct ones).
The product of its (nonzero) digits is 37632, while the sum is 36.
The square root of 140437728 is about 11850.6425142268. The cubic root of 140437728 is about 519.7900138342.
The spelling of 140437728 in words is "one hundred forty million, four hundred thirty-seven thousand, seven hundred twenty-eight".
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