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18288012854 = 2174160721613
BaseRepresentation
bin10001000010000011…
…001110111000110110
31202012112010022101102
4101002003032320312
5244423212402404
612222411330102
71215123354506
oct210203167066
952175108342
1018288012854
117835119811
123664750932
131955ac21a7
14c56b9da06
157207ea71e
hex4420cee36

18288012854 has 32 divisors (see below), whose sum is σ = 29804495616. Its totient is φ = 8381998080.

The previous prime is 18288012833. The next prime is 18288012863. The reversal of 18288012854 is 45821088281.

It is a junction number, because it is equal to n+sod(n) for n = 18288012799 and 18288012808.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 835352 + ... + 856964.

It is an arithmetic number, because the mean of its divisors is an integer number (931390488).

Almost surely, 218288012854 is an apocalyptic number.

18288012854 is a deficient number, since it is larger than the sum of its proper divisors (11516482762).

18288012854 is a wasteful number, since it uses less digits than its factorization.

18288012854 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22280.

The product of its (nonzero) digits is 327680, while the sum is 47.

The spelling of 18288012854 in words is "eighteen billion, two hundred eighty-eight million, twelve thousand, eight hundred fifty-four".

Divisors: 1 2 17 34 41 82 607 697 1214 1394 10319 20638 21613 24887 43226 49774 367421 423079 734842 846158 886133 1772266 13119091 15064261 26238182 30128522 223024547 446049094 537882731 1075765462 9144006427 18288012854