Base | Representation |
---|---|
bin | 10101011111001… |
… | …00101000000101 |
3 | 110120011021211210 |
4 | 22233210220011 |
5 | 332120233244 |
6 | 25515122033 |
7 | 4316016435 |
oct | 1257445005 |
9 | 416137753 |
10 | 180242949 |
11 | 92819217 |
12 | 50443319 |
13 | 2b45a643 |
14 | 19d1c2c5 |
15 | 10c554b9 |
hex | abe4a05 |
180242949 has 8 divisors (see below), whose sum is σ = 252972640. Its totient is φ = 113837616.
The previous prime is 180242939. The next prime is 180242977. The reversal of 180242949 is 949242081.
It is a sphenic number, since it is the product of 3 distinct primes.
It is not a de Polignac number, because 180242949 - 28 = 180242693 is a prime.
It is a Duffinian number.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (180242939) 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 7 ways as a sum of consecutive naturals, for example, 1581022 + ... + 1581135.
It is an arithmetic number, because the mean of its divisors is an integer number (31621580).
Almost surely, 2180242949 is an apocalyptic number.
180242949 is a gapful number since it is divisible by the number (19) formed by its first and last digit.
It is an amenable number.
180242949 is a deficient number, since it is larger than the sum of its proper divisors (72729691).
180242949 is a wasteful number, since it uses less digits than its factorization.
180242949 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 3162179.
The product of its (nonzero) digits is 41472, while the sum is 39.
The square root of 180242949 is about 13425.4589865673. The cubic root of 180242949 is about 564.8755295288.
The spelling of 180242949 in words is "one hundred eighty million, two hundred forty-two thousand, nine hundred forty-nine".
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