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80842434 = 23103257509
BaseRepresentation
bin1001101000110…
…00111011000010
312122010012222020
410310120323002
5131143424214
612004422310
72001102141
oct464307302
9178105866
1080842434
11416a7132
12230a7996
131399697a
14aa45758
15716d4a9
hex4d18ec2

80842434 has 32 divisors (see below), whose sum is σ = 164211840. Its totient is φ = 26529792.

The previous prime is 80842417. The next prime is 80842439. The reversal of 80842434 is 43424808.

It is a junction number, because it is equal to n+sod(n) for n = 80842395 and 80842404.

It is not an unprimeable number, because it can be changed into a prime (80842439) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 158572 + ... + 159080.

It is an arithmetic number, because the mean of its divisors is an integer number (5131620).

Almost surely, 280842434 is an apocalyptic number.

80842434 is an abundant number, since it is smaller than the sum of its proper divisors (83369406).

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

80842434 is a wasteful number, since it uses less digits than its factorization.

80842434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 874.

The product of its (nonzero) digits is 24576, while the sum is 33.

The square root of 80842434 is about 8991.2420721500. The cubic root of 80842434 is about 432.3941340449.

The spelling of 80842434 in words is "eighty million, eight hundred forty-two thousand, four hundred thirty-four".

Divisors: 1 2 3 6 103 206 257 309 509 514 618 771 1018 1527 1542 3054 26471 52427 52942 79413 104854 130813 157281 158826 261626 314562 392439 784878 13473739 26947478 40421217 80842434