| Base | Representation |
|---|---|
| bin | 101010111101010… |
| … | …011100001110000 |
| 3 | 1212020011001112012 |
| 4 | 222331103201300 |
| 5 | 2434000320330 |
| 6 | 155303222052 |
| 7 | 23600652350 |
| oct | 5275234160 |
| 9 | 1766131465 |
| 10 | 720713840 |
| 11 | 33a907a80 |
| 12 | 181447928 |
| 13 | b64126c2 |
| 14 | 6ba0ab60 |
| 15 | 43414c95 |
| hex | 2af53870 |
720713840 has 160 divisors (see below), whose sum is σ = 2117007360. Its totient is φ = 221644800.
The previous prime is 720713837. The next prime is 720713843. The reversal of 720713840 is 48317027.
It is a happy number.
720713840 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.
It is an interprime number because it is at equal distance from previous prime (720713837) and next prime (720713843).
It is a junction number, because it is equal to n+sod(n) for n = 720713797 and 720713806.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (720713843) by changing a digit.
It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 485900 + ... + 487380.
It is an arithmetic number, because the mean of its divisors is an integer number (13231296).
Almost surely, 2720713840 is an apocalyptic number.
720713840 is a gapful number since it is divisible by the number (70) 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 720713840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1058503680).
720713840 is an abundant number, since it is smaller than the sum of its proper divisors (1396293520).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
720713840 is a wasteful number, since it uses less digits than its factorization.
720713840 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 1591 (or 1585 counting only the distinct ones).
The product of its (nonzero) digits is 9408, while the sum is 32.
The square root of 720713840 is about 26846.1140577179. The cubic root of 720713840 is about 896.5770557312.
The spelling of 720713840 in words is "seven hundred twenty million, seven hundred thirteen thousand, eight hundred forty".
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