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182000381 = 4314512917
BaseRepresentation
bin10101101100100…
…01101011111101
3110200110120120212
422312101223331
5333043003011
630020522205
74336656233
oct1266215375
9420416525
10182000381
1193809642
1250b50365
132b924544
141a258953
1510ea108b
hexad91afd

182000381 has 8 divisors (see below), whose sum is σ = 186425184. Its totient is φ = 177584400.

The previous prime is 182000369. The next prime is 182000407. The reversal of 182000381 is 183000281.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-182000381 is a prime.

It is a super-2 number, since 2×1820003812 = 66248277368290322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (182000321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 60935 + ... + 63851.

It is an arithmetic number, because the mean of its divisors is an integer number (23303148).

Almost surely, 2182000381 is an apocalyptic number.

It is an amenable number.

182000381 is a deficient number, since it is larger than the sum of its proper divisors (4424803).

182000381 is a wasteful number, since it uses less digits than its factorization.

182000381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4411.

The product of its (nonzero) digits is 384, while the sum is 23.

The square root of 182000381 is about 13490.7516840241. The cubic root of 182000381 is about 566.7055062575.

The spelling of 182000381 in words is "one hundred eighty-two million, three hundred eighty-one", and thus it is an aban number.

Divisors: 1 43 1451 2917 62393 125431 4232567 182000381