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182281481 = 6122913049
BaseRepresentation
bin10101101110101…
…10010100001001
3110200222212011222
422313112110021
5333131001411
630030531425
74342236614
oct1267262411
9420885158
10182281481
1193990858
1251066b75
132b9c2485
141a2cd17b
15110094db
hexadd6509

182281481 has 8 divisors (see below), whose sum is σ = 186093000. Its totient is φ = 178496640.

The previous prime is 182281441. The next prime is 182281483. The reversal of 182281481 is 184182281.

It is a happy number.

182281481 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 4 ways, for example, as 25806400 + 156475081 = 5080^2 + 12509^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 182281481 - 222 = 178087177 is a prime.

It is a super-2 number, since 2×1822814812 = 66453076631106722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (182281483) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7445 + ... + 20493.

It is an arithmetic number, because the mean of its divisors is an integer number (23261625).

Almost surely, 2182281481 is an apocalyptic number.

It is an amenable number.

182281481 is a deficient number, since it is larger than the sum of its proper divisors (3811519).

182281481 is a wasteful number, since it uses less digits than its factorization.

182281481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13339.

The product of its digits is 8192, while the sum is 35.

The square root of 182281481 is about 13501.1659126166. The cubic root of 182281481 is about 566.9971154906.

The spelling of 182281481 in words is "one hundred eighty-two million, two hundred eighty-one thousand, four hundred eighty-one".

Divisors: 1 61 229 13049 13969 795989 2988221 182281481