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3005672181 = 371137103001
BaseRepresentation
bin1011001100100110…
…1110101011110101
321202110200222002220
42303021232223311
522123423002211
61214125552553
7134324535441
oct26311565365
97673628086
103005672181
111302694aa6
126ba715759
1338b91c265
14207281821
15128d14806
hexb326eaf5

3005672181 has 16 divisors (see below), whose sum is σ = 4093711488. Its totient is φ = 1961120000.

The previous prime is 3005672129. The next prime is 3005672203. The reversal of 3005672181 is 1812765003.

It is a cyclic number.

It is not a de Polignac number, because 3005672181 - 211 = 3005670133 is a prime.

It is a super-2 number, since 2×30056721812 = 18068130519274593522, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3005672101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22320 + ... + 80681.

It is an arithmetic number, because the mean of its divisors is an integer number (255856968).

Almost surely, 23005672181 is an apocalyptic number.

It is an amenable number.

3005672181 is a deficient number, since it is larger than the sum of its proper divisors (1088039307).

3005672181 is a wasteful number, since it uses less digits than its factorization.

3005672181 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103212.

The product of its (nonzero) digits is 10080, while the sum is 33.

The square root of 3005672181 is about 54824.0109897114. The cubic root of 3005672181 is about 1443.1579647735.

The spelling of 3005672181 in words is "three billion, five million, six hundred seventy-two thousand, one hundred eighty-one".

Divisors: 1 3 71 137 213 411 9727 29181 103001 309003 7313071 14111137 21939213 42333411 1001890727 3005672181