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80340380 = 22523174653
BaseRepresentation
bin1001100100111…
…10010110011100
312121011201021122
410302132112130
5131031343010
611545550112
71663611341
oct462362634
9177151248
1080340380
1141393a0a
1222aa5338
131384c2b3
14a9547c8
1570be855
hex4c9e59c

80340380 has 24 divisors (see below), whose sum is σ = 176051232. Its totient is φ = 30738752.

The previous prime is 80340367. The next prime is 80340397. The reversal of 80340380 is 8304308.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 86867 + ... + 87786.

It is an arithmetic number, because the mean of its divisors is an integer number (7335468).

Almost surely, 280340380 is an apocalyptic number.

It is an amenable number.

80340380 is an abundant number, since it is smaller than the sum of its proper divisors (95710852).

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

80340380 is a wasteful number, since it uses less digits than its factorization.

80340380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 174685 (or 174683 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 26.

The square root of 80340380 is about 8963.2795337421. The cubic root of 80340380 is about 431.4971787488.

Adding to 80340380 its reverse (8304308), we get a palindrome (88644688).

The spelling of 80340380 in words is "eighty million, three hundred forty thousand, three hundred eighty".

Divisors: 1 2 4 5 10 20 23 46 92 115 230 460 174653 349306 698612 873265 1746530 3493060 4017019 8034038 16068076 20085095 40170190 80340380