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18069038 = 2131979463
BaseRepresentation
bin100010011101…
…1011000101110
31021000000001122
41010323120232
514111202123
61443140542
7306404261
oct104733056
937000048
1018069038
11a221599
126074752
133988550
142584cd8
1518bdbc8
hex113b62e

18069038 has 32 divisors (see below), whose sum is σ = 31180800. Its totient is φ = 7783776.

The previous prime is 18069031. The next prime is 18069041. The reversal of 18069038 is 83096081.

It is a junction number, because it is equal to n+sod(n) for n = 18068989 and 18069007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18069031) 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 15 ways as a sum of consecutive naturals, for example, 38795 + ... + 39257.

It is an arithmetic number, because the mean of its divisors is an integer number (974400).

Almost surely, 218069038 is an apocalyptic number.

18069038 is a deficient number, since it is larger than the sum of its proper divisors (13111762).

18069038 is a wasteful number, since it uses less digits than its factorization.

18069038 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 576.

The product of its (nonzero) digits is 10368, while the sum is 35.

The square root of 18069038 is about 4250.7691068794. The cubic root of 18069038 is about 262.4087689013.

The spelling of 18069038 in words is "eighteen million, sixty-nine thousand, thirty-eight".

Divisors: 1 2 13 19 26 38 79 158 247 463 494 926 1027 1501 2054 3002 6019 8797 12038 17594 19513 36577 39026 73154 114361 228722 475501 694963 951002 1389926 9034519 18069038