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18291827282 = 227113373631
BaseRepresentation
bin10001000010010001…
…110010001001010010
31202012210022002210112
4101002101302021102
5244430201433112
612223025201322
71215200652341
oct210221621122
952183262715
1018291827282
117837294633
123665a90242
131956829451
14c574b3b58
15720d00a22
hex442472252

18291827282 has 8 divisors (see below), whose sum is σ = 27447869952. Its totient is φ = 9142537300.

The previous prime is 18291827273. The next prime is 18291827287. The reversal of 18291827282 is 28272819281.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 18291827282.

It is not an unprimeable number, because it can be changed into a prime (18291827287) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1681394 + ... + 1692237.

It is an arithmetic number, because the mean of its divisors is an integer number (3430983744).

Almost surely, 218291827282 is an apocalyptic number.

18291827282 is a deficient number, since it is larger than the sum of its proper divisors (9156042670).

18291827282 is a wasteful number, since it uses less digits than its factorization.

18291827282 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3376344.

The product of its digits is 516096, while the sum is 50.

The spelling of 18291827282 in words is "eighteen billion, two hundred ninety-one million, eight hundred twenty-seven thousand, two hundred eighty-two".

Divisors: 1 2 2711 5422 3373631 6747262 9145913641 18291827282