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18080608392 = 233273111931113
BaseRepresentation
bin10000110101101100…
…000011000010001000
31201200001212001221200
4100311230003002020
5244012113432032
612150042104200
71210024431000
oct206554030210
951601761850
1018080608392
117739039770
1236071ab060
131921b44862
14c37411000
1570c4cc47c
hex435b03088

18080608392 has 768 divisors, whose sum is σ = 68290560000. Its totient is φ = 4267468800.

The previous prime is 18080608379. The next prime is 18080608397. The reversal of 18080608392 is 29380608081.

18080608392 is a `hidden beast` number, since 1 + 8 + 0 + 8 + 0 + 608 + 39 + 2 = 666.

It is not an unprimeable number, because it can be changed into a prime (18080608397) by changing a digit.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 160005328 + ... + 160005440.

It is an arithmetic number, because the mean of its divisors is an integer number (88920000).

Almost surely, 218080608392 is an apocalyptic number.

18080608392 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18080608392, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34145280000).

18080608392 is an abundant number, since it is smaller than the sum of its proper divisors (50209951608).

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

18080608392 is a wasteful number, since it uses less digits than its factorization.

18080608392 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 207 (or 186 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 45.

The spelling of 18080608392 in words is "eighteen billion, eighty million, six hundred eight thousand, three hundred ninety-two".