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38830388840 = 23517127944647
BaseRepresentation
bin100100001010011110…
…001011011001101000
310201020011020010121122
4210022132023121220
51114011034420330
625501033554412
72543152600505
oct441236133150
9121204203548
1038830388840
1115516818951
127638275a08
13387a96b059
141c4510c4ac
151023ea05e5
hex90a78b668

38830388840 has 64 divisors (see below), whose sum is σ = 92582092800. Its totient is φ = 14606742528.

The previous prime is 38830388833. The next prime is 38830388867. The reversal of 38830388840 is 4888303883.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 847397 + ... + 892043.

It is an arithmetic number, because the mean of its divisors is an integer number (1446595200).

Almost surely, 238830388840 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 38830388840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (46291046400).

38830388840 is an abundant number, since it is smaller than the sum of its proper divisors (53751703960).

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

38830388840 is a wasteful number, since it uses less digits than its factorization.

38830388840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45954 (or 45950 counting only the distinct ones).

The product of its (nonzero) digits is 3538944, while the sum is 53.

The spelling of 38830388840 in words is "thirty-eight billion, eight hundred thirty million, three hundred eighty-eight thousand, eight hundred forty".

Divisors: 1 2 4 5 8 10 17 20 34 40 68 85 136 170 340 680 1279 2558 5116 6395 10232 12790 21743 25580 43486 44647 51160 86972 89294 108715 173944 178588 217430 223235 357176 434860 446470 758999 869720 892940 1517998 1785880 3035996 3794995 6071992 7589990 15179980 30359960 57103513 114207026 228414052 285517565 456828104 571035130 970759721 1142070260 1941519442 2284140520 3883038884 4853798605 7766077768 9707597210 19415194420 38830388840