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19000076 = 221953289
BaseRepresentation
bin100100001111…
…0101100001100
31022202022012112
41020132230030
514331000301
61515123152
7320332544
oct110365414
938668175
1019000076
11a7a8047
1264434b8
133c23264
142748324
151a049bb
hex121eb0c

19000076 has 36 divisors (see below), whose sum is σ = 36073800. Its totient is φ = 8731008.

The previous prime is 19000073. The next prime is 19000087. The reversal of 19000076 is 67000091.

It is a happy number.

It is a super-2 number, since 2×190000762 = 722005776011552, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (19000073) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 213440 + ... + 213528.

It is an arithmetic number, because the mean of its divisors is an integer number (1002050).

Almost surely, 219000076 is an apocalyptic number.

It is an amenable number.

19000076 is a deficient number, since it is larger than the sum of its proper divisors (17073724).

19000076 is a wasteful number, since it uses less digits than its factorization.

19000076 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 218 (or 163 counting only the distinct ones).

The product of its (nonzero) digits is 378, while the sum is 23.

The square root of 19000076 is about 4358.9076613298. The cubic root of 19000076 is about 266.8405206586.

It can be divided in two parts, 190000 and 76, that multiplied together give a square (14440000 = 38002).

The spelling of 19000076 in words is "nineteen million, seventy-six", and thus it is an aban number and an uban number.

Divisors: 1 2 4 19 38 53 76 89 106 178 212 356 1007 1691 2014 2809 3382 4028 4717 5618 6764 9434 11236 18868 53371 89623 106742 179246 213484 250001 358492 500002 1000004 4750019 9500038 19000076