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19239631848 = 23322233113853
BaseRepresentation
bin10001111010110001…
…010111101111101000
31211122211202120020100
4101322301113233220
5303400321204343
612501044025400
71250530113063
oct217261275750
954584676210
1019239631848
1181832a8198
12388b392260
131a77cbcb58
14d073158da
157791219d3
hex47ac57be8

19239631848 has 96 divisors (see below), whose sum is σ = 52522928640. Its totient is φ = 6362271360.

The previous prime is 19239631847. The next prime is 19239631891. The reversal of 19239631848 is 84813693291.

It is a Cunningham number, because it is equal to 1387072-1.

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

It is a junction number, because it is equal to n+sod(n) for n = 19239631794 and 19239631803.

It is not an unprimeable number, because it can be changed into a prime (19239631847) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4991490 + ... + 4995342.

It is an arithmetic number, because the mean of its divisors is an integer number (547113840).

Almost surely, 219239631848 is an apocalyptic number.

19239631848 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

19239631848 is an abundant number, since it is smaller than the sum of its proper divisors (33283296792).

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

19239631848 is a wasteful number, since it uses less digits than its factorization.

19239631848 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4399 (or 4392 counting only the distinct ones).

The product of its digits is 2239488, while the sum is 54.

The spelling of 19239631848 in words is "nineteen billion, two hundred thirty-nine million, six hundred thirty-one thousand, eight hundred forty-eight".

Divisors: 1 2 3 4 6 8 9 12 18 24 36 72 223 311 446 622 669 892 933 1244 1338 1784 1866 2007 2488 2676 2799 3732 3853 4014 5352 5598 7464 7706 8028 11196 11559 15412 16056 22392 23118 30824 34677 46236 69353 69354 92472 138706 138708 208059 277412 277416 416118 554824 624177 832236 859219 1198283 1248354 1664472 1718438 2396566 2496708 2577657 3436876 3594849 4793132 4993416 5155314 6873752 7189698 7732971 9586264 10310628 10784547 14379396 15465942 20621256 21569094 28758792 30931884 43138188 61863768 86276376 267217109 534434218 801651327 1068868436 1603302654 2137736872 2404953981 3206605308 4809907962 6413210616 9619815924 19239631848