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8868409980 = 22351911636689
BaseRepresentation
bin10000100001001100…
…10011001001111100
3211220001110220102220
420100212103021330
5121130303104410
64024000445340
7432524145453
oct102046231174
924801426386
108868409980
113840a93751
121876019850
13ab4428b91
14601b5db9a
1536d887070
hex21099327c

8868409980 has 96 divisors (see below), whose sum is σ = 26164857600. Its totient is φ = 2238179328.

The previous prime is 8868409973. The next prime is 8868409987. The reversal of 8868409980 is 899048688.

It is an interprime number because it is at equal distance from previous prime (8868409973) and next prime (8868409987).

It is a hoax number, since the sum of its digits (60) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (60).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8868409987) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1322476 + ... + 1329164.

It is an arithmetic number, because the mean of its divisors is an integer number (272550600).

Almost surely, 28868409980 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 8868409980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13082428800).

8868409980 is an abundant number, since it is smaller than the sum of its proper divisors (17296447620).

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

8868409980 is a wasteful number, since it uses less digits than its factorization.

8868409980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7883 (or 7881 counting only the distinct ones).

The product of its (nonzero) digits is 7962624, while the sum is 60.

The square root of 8868409980 is about 94172.2357173281. The cubic root of 8868409980 is about 2069.8962957685.

The spelling of 8868409980 in words is "eight billion, eight hundred sixty-eight million, four hundred nine thousand, nine hundred eighty".

Divisors: 1 2 3 4 5 6 10 12 15 19 20 30 38 57 60 76 95 114 190 228 285 380 570 1140 1163 2326 3489 4652 5815 6689 6978 11630 13378 13956 17445 20067 22097 23260 26756 33445 34890 40134 44194 66291 66890 69780 80268 88388 100335 110485 127091 132582 133780 200670 220970 254182 265164 331455 381273 401340 441940 508364 635455 662910 762546 1270910 1325820 1525092 1906365 2541820 3812730 7625460 7779307 15558614 23337921 31117228 38896535 46675842 77793070 93351684 116689605 147806833 155586140 233379210 295613666 443420499 466758420 591227332 739034165 886840998 1478068330 1773681996 2217102495 2956136660 4434204990 8868409980