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18280828882 = 2471039187177
BaseRepresentation
bin10001000001100111…
…110100111111010010
31202012000121022211101
4101001213310333102
5244414343011012
612221553335014
71215005324131
oct210147647722
952160538741
1018280828882
117831062348
12366226746a
131954478314
14c55c4d918
1571ed7bd57
hex4419f4fd2

18280828882 has 16 divisors (see below), whose sum is σ = 28031777280. Its totient is φ = 8937279648.

The previous prime is 18280828837. The next prime is 18280828901. The reversal of 18280828882 is 28882808281.

It is a happy number.

It is a super-2 number, since 2×182808288822 (a number of 21 digits) contains 22 as substring.

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, 4078 + ... + 191254.

It is an arithmetic number, because the mean of its divisors is an integer number (1751986080).

Almost surely, 218280828882 is an apocalyptic number.

18280828882 is a deficient number, since it is larger than the sum of its proper divisors (9750948398).

18280828882 is a wasteful number, since it uses less digits than its factorization.

18280828882 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 188265.

The product of its (nonzero) digits is 2097152, while the sum is 55.

The spelling of 18280828882 in words is "eighteen billion, two hundred eighty million, eight hundred twenty-eight thousand, eight hundred eighty-two".

Divisors: 1 2 47 94 1039 2078 48833 97666 187177 374354 8797319 17594638 194476903 388953806 9140414441 18280828882