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19080072 = 23321124091
BaseRepresentation
bin100100011001…
…0001110001000
31022220100221100
41020302032020
514341030242
61520541400
7321115014
oct110621610
938810840
1019080072
11a852160
126481860
133c507ab
142769544
151a1d54c
hex1232388

19080072 has 48 divisors (see below), whose sum is σ = 56375280. Its totient is φ = 5781600.

The previous prime is 19079993. The next prime is 19080077. The reversal of 19080072 is 27008091.

It is not an unprimeable number, because it can be changed into a prime (19080077) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11254 + ... + 12837.

It is an arithmetic number, because the mean of its divisors is an integer number (1174485).

Almost surely, 219080072 is an apocalyptic number.

19080072 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

19080072 is an abundant number, since it is smaller than the sum of its proper divisors (37295208).

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

19080072 is a wasteful number, since it uses less digits than its factorization.

19080072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24114 (or 24107 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 27.

The square root of 19080072 is about 4368.0741751944. The cubic root of 19080072 is about 267.2144890968.

The spelling of 19080072 in words is "nineteen million, eighty thousand, seventy-two".

Divisors: 1 2 3 4 6 8 9 11 12 18 22 24 33 36 44 66 72 88 99 132 198 264 396 792 24091 48182 72273 96364 144546 192728 216819 265001 289092 433638 530002 578184 795003 867276 1060004 1590006 1734552 2120008 2385009 3180012 4770018 6360024 9540036 19080072