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38768811780 = 22351749737643
BaseRepresentation
bin100100000110110011…
…010001111100000100
310201001212100200202210
4210012303101330010
51113344303434110
625450554103420
72541504314526
oct440663217404
9121055320683
1038768811780
1115494a90116
12761b71ab70
13386ac8b31a
141c3ac7da16
15101d88a520
hex906cd1f04

38768811780 has 96 divisors (see below), whose sum is σ = 114976278144. Its totient is φ = 9726982144.

The previous prime is 38768811779. The next prime is 38768811827. The reversal of 38768811780 is 8711886783.

It is a self number, because there is not a number n which added to its sum of digits gives 38768811780.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5068639 + ... + 5076281.

It is an arithmetic number, because the mean of its divisors is an integer number (1197669564).

Almost surely, 238768811780 is an apocalyptic number.

38768811780 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

38768811780 is an abundant number, since it is smaller than the sum of its proper divisors (76207466364).

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

38768811780 is a wasteful number, since it uses less digits than its factorization.

38768811780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12645 (or 12643 counting only the distinct ones).

The product of its (nonzero) digits is 3612672, while the sum is 57.

The spelling of 38768811780 in words is "thirty-eight billion, seven hundred sixty-eight million, eight hundred eleven thousand, seven hundred eighty".

Divisors: 1 2 3 4 5 6 10 12 15 17 20 30 34 51 60 68 85 102 170 204 255 340 510 1020 4973 7643 9946 14919 15286 19892 22929 24865 29838 30572 38215 45858 49730 59676 74595 76430 84541 91716 99460 114645 129931 149190 152860 169082 229290 253623 259862 298380 338164 389793 422705 458580 507246 519724 649655 779586 845410 1014492 1268115 1299310 1559172 1690820 1948965 2536230 2598620 3897930 5072460 7795860 38008639 76017278 114025917 152034556 190043195 228051834 380086390 456103668 570129585 646146863 760172780 1140259170 1292293726 1938440589 2280518340 2584587452 3230734315 3876881178 6461468630 7753762356 9692202945 12922937260 19384405890 38768811780