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189168984 = 23324755901
BaseRepresentation
bin10110100011001…
…11110101011000
3111011221210001200
423101213311120
5341411401414
630434314200
74454624034
oct1321476530
9434853050
10189168984
1197865504
1253428960
1330264414
141b1a31c4
151191a109
hexb467d58

189168984 has 48 divisors (see below), whose sum is σ = 523242720. Its totient is φ = 61713600.

The previous prime is 189168977. The next prime is 189168989. The reversal of 189168984 is 489861981.

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 189168984.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189168989) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 24567 + ... + 31334.

It is an arithmetic number, because the mean of its divisors is an integer number (10900890).

Almost surely, 2189168984 is an apocalyptic number.

It is an amenable number.

189168984 is an abundant number, since it is smaller than the sum of its proper divisors (334073736).

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

189168984 is a wasteful number, since it uses less digits than its factorization.

189168984 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55960 (or 55953 counting only the distinct ones).

The product of its digits is 995328, while the sum is 54.

The square root of 189168984 is about 13753.8716003895. The cubic root of 189168984 is about 574.0503381495.

The spelling of 189168984 in words is "one hundred eighty-nine million, one hundred sixty-eight thousand, nine hundred eighty-four".

Divisors: 1 2 3 4 6 8 9 12 18 24 36 47 72 94 141 188 282 376 423 564 846 1128 1692 3384 55901 111802 167703 223604 335406 447208 503109 670812 1006218 1341624 2012436 2627347 4024872 5254694 7882041 10509388 15764082 21018776 23646123 31528164 47292246 63056328 94584492 189168984