Base | Representation |
---|---|
bin | 10101101010111… |
… | …11011000001000 |
3 | 110200002002220200 |
4 | 22311133120020 |
5 | 333014404222 |
6 | 30012252200 |
7 | 4335140400 |
oct | 1265373010 |
9 | 420062820 |
10 | 181794312 |
11 | 93688837 |
12 | 50a71060 |
13 | 2b8817cb |
14 | 1a203800 |
15 | 10e5eeac |
hex | ad5f608 |
181794312 has 108 divisors (see below), whose sum is σ = 575279055. Its totient is φ = 51712416.
The previous prime is 181794271. The next prime is 181794317. The reversal of 181794312 is 213497181.
It is a happy number.
It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.
181794312 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.
It can be written as a sum of positive squares in only one way, i.e., 90897156 + 90897156 = 9534^2 + 9534^2 .
It is an ABA number since it can be written as A⋅BA, here for A=2, B=9534.
It is a Harshad number since it is a multiple of its sum of digits (36).
It is a nude number because it is divisible by every one of its digits.
It is not an unprimeable number, because it can be changed into a prime (181794317) by changing a digit.
It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 800743 + ... + 800969.
Almost surely, 2181794312 is an apocalyptic number.
181794312 is a gapful number since it is divisible by the number (12) 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 181794312
181794312 is an abundant number, since it is smaller than the sum of its proper divisors (393484743).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
181794312 is a wasteful number, since it uses less digits than its factorization.
181794312 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 480 (or 239 counting only the distinct ones).
The product of its digits is 12096, while the sum is 36.
The square root of 181794312 is about 13483.1121036651. The cubic root of 181794312 is about 566.4915423475.
It can be divided in two parts, 181794 and 312, that added together give a triangular number (182106 = T603).
The spelling of 181794312 in words is "one hundred eighty-one million, seven hundred ninety-four thousand, three hundred twelve".
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