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80705008 = 2419535009
BaseRepresentation
bin1001100111101…
…11010111110000
312121212020110101
410303313113300
5131130030013
612001442144
71666660366
oct463672760
9177766411
1080705008
114161295a
1223040354
1313949257
14aa0b636
1571428dd
hex4cf75f0

80705008 has 40 divisors (see below), whose sum is σ = 167734800. Its totient is φ = 37499904.

The previous prime is 80705003. The next prime is 80705011. The reversal of 80705008 is 80050708.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80705003) 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, 13608 + ... + 18616.

It is an arithmetic number, because the mean of its divisors is an integer number (4193370).

Almost surely, 280705008 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 80705008, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (83867400).

80705008 is an abundant number, since it is smaller than the sum of its proper divisors (87029792).

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

80705008 is a wasteful number, since it uses less digits than its factorization.

80705008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5089 (or 5083 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 28.

The square root of 80705008 is about 8983.5966071502. The cubic root of 80705008 is about 432.1489826798.

The spelling of 80705008 in words is "eighty million, seven hundred five thousand, eight".

Divisors: 1 2 4 8 16 19 38 53 76 106 152 212 304 424 848 1007 2014 4028 5009 8056 10018 16112 20036 40072 80144 95171 190342 265477 380684 530954 761368 1061908 1522736 2123816 4247632 5044063 10088126 20176252 40352504 80705008