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80297088220 = 22536943108677
BaseRepresentation
bin100101011001000010…
…1000101010011011100
321200021001010201102101
41022302011011103130
52303422023310340
6100515445134444
75541556663006
oct1126205052334
9250231121371
1080297088220
1131065681938
121368b3ba424
13775885346b
143c5a3d1376
15214e604c9a
hex12b21454dc

80297088220 has 24 divisors (see below), whose sum is σ = 168630001344. Its totient is φ = 32117670336.

The previous prime is 80297088187. The next prime is 80297088229. The reversal of 80297088220 is 2288079208.

It is a super-2 number, since 2×802970882202 (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80297088229) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 684522 + ... + 793198.

It is an arithmetic number, because the mean of its divisors is an integer number (7026250056).

Almost surely, 280297088220 is an apocalyptic number.

It is an amenable number.

80297088220 is an abundant number, since it is smaller than the sum of its proper divisors (88332913124).

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

80297088220 is a wasteful number, since it uses less digits than its factorization.

80297088220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145629 (or 145627 counting only the distinct ones).

The product of its (nonzero) digits is 258048, while the sum is 46.

The spelling of 80297088220 in words is "eighty billion, two hundred ninety-seven million, eighty-eight thousand, two hundred twenty".

Divisors: 1 2 4 5 10 20 36943 73886 108677 147772 184715 217354 369430 434708 543385 738860 1086770 2173540 4014854411 8029708822 16059417644 20074272055 40148544110 80297088220