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18068070 = 235602269
BaseRepresentation
bin100010011101…
…1001001100110
31020222221201210
41010323021212
514111134240
61443132250
7306401406
oct104731146
936887653
1018068070
11a220899
126074086
133987c87
142584806
1518bd780
hex113b266

18068070 has 16 divisors (see below), whose sum is σ = 43363440. Its totient is φ = 4818144.

The previous prime is 18068033. The next prime is 18068137. The reversal of 18068070 is 7086081.

It is a Harshad number since it is a multiple of its sum of digits (30), and also a Moran number because the ratio is a prime number: 602269 = 18068070 / (1 + 8 + 0 + 6 + 8 + 0 + 7 + 0).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 301105 + ... + 301164.

It is an arithmetic number, because the mean of its divisors is an integer number (2710215).

Almost surely, 218068070 is an apocalyptic number.

18068070 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18068070 is an abundant number, since it is smaller than the sum of its proper divisors (25295370).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18068070 is a wasteful number, since it uses less digits than its factorization.

18068070 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 602279.

The product of its (nonzero) digits is 2688, while the sum is 30.

The square root of 18068070 is about 4250.6552436066. The cubic root of 18068070 is about 262.4040828701.

The spelling of 18068070 in words is "eighteen million, sixty-eight thousand, seventy".

Divisors: 1 2 3 5 6 10 15 30 602269 1204538 1806807 3011345 3613614 6022690 9034035 18068070