| Base | Representation |
|---|---|
| bin | 10100100010111… |
| … | …00011111101000 |
| 3 | 110000022001100000 |
| 4 | 22101130133220 |
| 5 | 323110022240 |
| 6 | 25033543000 |
| 7 | 4161624330 |
| oct | 1221343750 |
| 9 | 400261300 |
| 10 | 172345320 |
| 11 | 89314654 |
| 12 | 49874a60 |
| 13 | 299239a4 |
| 14 | 18c640c0 |
| 15 | 101e5430 |
| hex | a45c7e8 |
172345320 has 384 divisors, whose sum is σ = 707616000. Its totient is φ = 36827136.
The previous prime is 172345319. The next prime is 172345321. The reversal of 172345320 is 23543271.
172345320 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 (172345319) and next prime (172345321).
It is a Harshad number since it is a multiple of its sum of digits (27).
It is a zygodrome in base 3.
It is not an unprimeable number, because it can be changed into a prime (172345321) by changing a digit.
It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1156606 + ... + 1156754.
It is an arithmetic number, because the mean of its divisors is an integer number (1842750).
Almost surely, 2172345320 is an apocalyptic number.
172345320 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 172345320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (353808000).
172345320 is an abundant number, since it is smaller than the sum of its proper divisors (535270680).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
172345320 is a wasteful number, since it uses less digits than its factorization.
172345320 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 199 (or 183 counting only the distinct ones).
The product of its (nonzero) digits is 5040, while the sum is 27.
The square root of 172345320 is about 13128.0356489461. The cubic root of 172345320 is about 556.5017037023.
Adding to 172345320 its reverse (23543271), we get a palindrome (195888591).
The spelling of 172345320 in words is "one hundred seventy-two million, three hundred forty-five thousand, three hundred twenty".
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