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19142182 = 29571091
BaseRepresentation
bin100100100000…
…1011000100110
31100000112010201
41021001120212
514400022212
61522141114
7321464053
oct111013046
940015121
1019142182
11a894894
1264b179a
133c72b47
14278402a
151a31b57
hex1241626

19142182 has 4 divisors (see below), whose sum is σ = 28713276. Its totient is φ = 9571090.

The previous prime is 19142171. The next prime is 19142191. The reversal of 19142182 is 28124191.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 28124191 = 29395987.

It is a super-2 number, since 2×191421822 = 732846263442248, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 19142182.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4785544 + ... + 4785547.

It is an arithmetic number, because the mean of its divisors is an integer number (7178319).

Almost surely, 219142182 is an apocalyptic number.

19142182 is a deficient number, since it is larger than the sum of its proper divisors (9571094).

19142182 is an equidigital number, since it uses as much as digits as its factorization.

19142182 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9571093.

The product of its digits is 1152, while the sum is 28.

The square root of 19142182 is about 4375.1779392386. The cubic root of 19142182 is about 267.5041231495.

Subtracting 19142182 from its reverse (28124191), we obtain a square (8982009 = 29972).

It can be divided in two parts, 1914 and 2182, that added together give a 12-th power (4096 = 212).

The spelling of 19142182 in words is "nineteen million, one hundred forty-two thousand, one hundred eighty-two".

Divisors: 1 2 9571091 19142182