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80353672420 = 22572772072039
BaseRepresentation
bin100101011010101110…
…0111011110011100100
321200101222121111100111
41022311130323303210
52304031020004140
6100525230022404
75543144642350
oct1126534736344
9250358544314
1080353672420
113109460a43a
12136a6347a04
1377674a5738
143c63b20460
1521545807ea
hex12b573bce4

80353672420 has 48 divisors (see below), whose sum is σ = 193545112320. Its totient is φ = 27450359424.

The previous prime is 80353672393. The next prime is 80353672457. The reversal of 80353672420 is 2427635308.

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, 997240 + ... + 1074799.

It is an arithmetic number, because the mean of its divisors is an integer number (4032189840).

Almost surely, 280353672420 is an apocalyptic number.

It is an amenable number.

80353672420 is an abundant number, since it is smaller than the sum of its proper divisors (113191439900).

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

80353672420 is a wasteful number, since it uses less digits than its factorization.

80353672420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2072332 (or 2072330 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 40.

The spelling of 80353672420 in words is "eighty billion, three hundred fifty-three million, six hundred seventy-two thousand, four hundred twenty".

Divisors: 1 2 4 5 7 10 14 20 28 35 70 140 277 554 1108 1385 1939 2770 3878 5540 7756 9695 19390 38780 2072039 4144078 8288156 10360195 14504273 20720390 29008546 41440780 58017092 72521365 145042730 290085460 573954803 1147909606 2295819212 2869774015 4017683621 5739548030 8035367242 11479096060 16070734484 20088418105 40176836210 80353672420