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38405021160 = 233511257113209
BaseRepresentation
bin100011110001000111…
…100001110111101000
310200010111211012212010
4203301013201313220
51112123141134120
625350520515520
72526466202502
oct436107416750
9120114735763
1038405021160
11153186a6910
12753991bba0
1338107b70bc
141c04822d72
15eeb97a7e0
hex8f11e1de8

38405021160 has 128 divisors (see below), whose sum is σ = 126179337600. Its totient is φ = 9273999360.

The previous prime is 38405021159. The next prime is 38405021191. The reversal of 38405021160 is 6112050483.

38405021160 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (30).

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, 282636 + ... + 395844.

It is an arithmetic number, because the mean of its divisors is an integer number (985776075).

Almost surely, 238405021160 is an apocalyptic number.

38405021160 is a gapful number since it is divisible by the number (30) 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 38405021160, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (63089668800).

38405021160 is an abundant number, since it is smaller than the sum of its proper divisors (87774316440).

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

38405021160 is a wasteful number, since it uses less digits than its factorization.

38405021160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113491 (or 113487 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 30.

The spelling of 38405021160 in words is "thirty-eight billion, four hundred five million, twenty-one thousand, one hundred sixty".

Divisors: 1 2 3 4 5 6 8 10 11 12 15 20 22 24 30 33 40 44 55 60 66 88 110 120 132 165 220 257 264 330 440 514 660 771 1028 1285 1320 1542 2056 2570 2827 3084 3855 5140 5654 6168 7710 8481 10280 11308 14135 15420 16962 22616 28270 30840 33924 42405 56540 67848 84810 113080 113209 169620 226418 339240 339627 452836 566045 679254 905672 1132090 1245299 1358508 1698135 2264180 2490598 2717016 3396270 3735897 4528360 4981196 6226495 6792540 7471794 9962392 12452990 13585080 14943588 18679485 24905980 29094713 29887176 37358970 49811960 58189426 74717940 87284139 116378852 145473565 149435880 174568278 232757704 290947130 320041843 349136556 436420695 581894260 640083686 698273112 872841390 960125529 1163788520 1280167372 1600209215 1745682780 1920251058 2560334744 3200418430 3491365560 3840502116 4800627645 6400836860 7681004232 9601255290 12801673720 19202510580 38405021160