Base | Representation |
---|---|
bin | 10101100001000… |
… | …00111100101110 |
3 | 110120121211202221 |
4 | 22300200330232 |
5 | 332201140110 |
6 | 25524305554 |
7 | 4321066000 |
oct | 1260407456 |
9 | 416554687 |
10 | 180490030 |
11 | 92977916 |
12 | 505422ba |
13 | 2b515c46 |
14 | 19d84370 |
15 | 10ca37da |
hex | ac20f2e |
180490030 has 64 divisors (see below), whose sum is σ = 383356800. Its totient is φ = 61152000.
The previous prime is 180490019. The next prime is 180490031. The reversal of 180490030 is 30094081.
It is a junction number, because it is equal to n+sod(n) for n = 180489977 and 180490004.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (180490031) 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 31 ways as a sum of consecutive naturals, for example, 346170 + ... + 346690.
It is an arithmetic number, because the mean of its divisors is an integer number (5989950).
Almost surely, 2180490030 is an apocalyptic number.
180490030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.
180490030 is an abundant number, since it is smaller than the sum of its proper divisors (202866770).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
180490030 is a wasteful number, since it uses less digits than its factorization.
180490030 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 650 (or 636 counting only the distinct ones).
The product of its (nonzero) digits is 864, while the sum is 25.
The square root of 180490030 is about 13434.6577924412. The cubic root of 180490030 is about 565.1335262767.
The spelling of 180490030 in words is "one hundred eighty million, four hundred ninety thousand, thirty".
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