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19000998 = 2321055611
BaseRepresentation
bin100100001111…
…0111010100110
31022202100110200
41020132322212
514331012443
61515131330
7320335332
oct110367246
938670420
1019000998
11a7a8805
126443b46
133c237c3
1427487c2
151a04dd3
hex121eea6

19000998 has 12 divisors (see below), whose sum is σ = 41168868. Its totient is φ = 6333660.

The previous prime is 19000997. The next prime is 19001011. The reversal of 19000998 is 89900091.

It is a super-2 number, since 2×190009982 = 722075849992008, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19000991) 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 5 ways as a sum of consecutive naturals, for example, 527788 + ... + 527823.

It is an arithmetic number, because the mean of its divisors is an integer number (3430739).

Almost surely, 219000998 is an apocalyptic number.

19000998 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

19000998 is an abundant number, since it is smaller than the sum of its proper divisors (22167870).

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

19000998 is a wasteful number, since it uses less digits than its factorization.

19000998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1055619 (or 1055616 counting only the distinct ones).

The product of its (nonzero) digits is 5832, while the sum is 36.

The square root of 19000998 is about 4359.0134204886. The cubic root of 19000998 is about 266.8448368340.

The spelling of 19000998 in words is "nineteen million, nine hundred ninety-eight", and thus it is an aban number.

Divisors: 1 2 3 6 9 18 1055611 2111222 3166833 6333666 9500499 19000998