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80000008860 = 2235792213641
BaseRepresentation
bin100101010000001011…
…1110100001010011100
321122111100010112011010
41022200113310022130
52302320000240420
6100430153455220
75531321566302
oct1124027641234
9248440115133
1080000008860
1130a22a12802
1213607a11510
13770c138b65
143c2cb7c272
1521334c14e0
hex12a05f429c

80000008860 has 72 divisors (see below), whose sum is σ = 226872421776. Its totient is φ = 21063194880.

The previous prime is 80000008853. The next prime is 80000008873. The reversal of 80000008860 is 6880000008.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 267640 + ... + 481280.

It is an arithmetic number, because the mean of its divisors is an integer number (3151005858).

Almost surely, 280000008860 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 80000008860, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (113436210888).

80000008860 is an abundant number, since it is smaller than the sum of its proper divisors (146872412916).

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

80000008860 is a wasteful number, since it uses less digits than its factorization.

80000008860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 213811 (or 213730 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 30.

Adding to 80000008860 its reverse (6880000008), we get a palindrome (86880008868).

The spelling of 80000008860 in words is "eighty billion, eight thousand, eight hundred sixty".

Divisors: 1 2 3 4 5 6 10 12 15 20 30 60 79 158 237 316 395 474 790 948 1185 1580 2370 4740 6241 12482 18723 24964 31205 37446 62410 74892 93615 124820 187230 213641 374460 427282 640923 854564 1068205 1281846 2136410 2563692 3204615 4272820 6409230 12818460 16877639 33755278 50632917 67510556 84388195 101265834 168776390 202531668 253164585 337552780 506329170 1012658340 1333333481 2666666962 4000000443 5333333924 6666667405 8000000886 13333334810 16000001772 20000002215 26666669620 40000004430 80000008860