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3008638381 = 73120896637
BaseRepresentation
bin1011001101010100…
…0010110110101101
321202200021122222011
42303111002312231
522130202412011
61214313321221
7134362001320
oct26325026655
97680248864
103008638381
111304330601
126bb706211
1338c41a3c8
142078147b7
151291ed621
hexb3542dad

3008638381 has 16 divisors (see below), whose sum is σ = 3551595520. Its totient is φ = 2494074240.

The previous prime is 3008638361. The next prime is 3008638397. The reversal of 3008638381 is 1838368003.

It is not a de Polignac number, because 3008638381 - 27 = 3008638253 is a prime.

It is a super-2 number, since 2×30086383812 = 18103809815252602322, 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 (3008638351) 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 15 ways as a sum of consecutive naturals, for example, 449995 + ... + 456631.

It is an arithmetic number, because the mean of its divisors is an integer number (221974720).

Almost surely, 23008638381 is an apocalyptic number.

3008638381 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

It is an amenable number.

3008638381 is a deficient number, since it is larger than the sum of its proper divisors (542957139).

3008638381 is a wasteful number, since it uses less digits than its factorization.

3008638381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8764.

The product of its (nonzero) digits is 82944, while the sum is 40.

The square root of 3008638381 is about 54851.0563344044. The cubic root of 3008638381 is about 1443.6325438925.

The spelling of 3008638381 in words is "three billion, eight million, six hundred thirty-eight thousand, three hundred eighty-one".

Divisors: 1 7 31 217 2089 6637 14623 46459 64759 205747 453313 1440229 13864693 97052851 429805483 3008638381