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80838860 = 2254041943
BaseRepresentation
bin1001101000110…
…00000011001100
312122010001001212
410310120003030
5131143320420
612004353552
72001055544
oct464300314
9178101055
1080838860
11416a4483
12230a58b8
131399515b
14aa44324
15716c3c5
hex4d180cc

80838860 has 12 divisors (see below), whose sum is σ = 169761648. Its totient is φ = 32335536.

The previous prime is 80838853. The next prime is 80838899. The reversal of 80838860 is 6883808.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2020952 + ... + 2020991.

It is an arithmetic number, because the mean of its divisors is an integer number (14146804).

Almost surely, 280838860 is an apocalyptic number.

It is an amenable number.

80838860 is an abundant number, since it is smaller than the sum of its proper divisors (88922788).

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

80838860 is a wasteful number, since it uses less digits than its factorization.

80838860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4041952 (or 4041950 counting only the distinct ones).

The product of its (nonzero) digits is 73728, while the sum is 41.

The square root of 80838860 is about 8991.0433209945. The cubic root of 80838860 is about 432.3877619813.

The spelling of 80838860 in words is "eighty million, eight hundred thirty-eight thousand, eight hundred sixty".

Divisors: 1 2 4 5 10 20 4041943 8083886 16167772 20209715 40419430 80838860