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80318706 = 23133159563
BaseRepresentation
bin1001100100110…
…01000011110010
312121010121112220
410302121003302
5131030144311
611545301510
71663461216
oct462310362
9177117486
1080318706
11413796a6
1222a94896
1313842480
14a94a946
1570b8206
hex4c990f2

80318706 has 64 divisors (see below), whose sum is σ = 181923840. Its totient is φ = 23469120.

The previous prime is 80318701. The next prime is 80318717. The reversal of 80318706 is 60781308.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (80318701) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 142381 + ... + 142943.

It is an arithmetic number, because the mean of its divisors is an integer number (2842560).

Almost surely, 280318706 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 80318706, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (90961920).

80318706 is an abundant number, since it is smaller than the sum of its proper divisors (101605134).

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

80318706 is a wasteful number, since it uses less digits than its factorization.

80318706 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 671.

The product of its (nonzero) digits is 8064, while the sum is 33.

The square root of 80318706 is about 8962.0704081144. The cubic root of 80318706 is about 431.4583725637.

The spelling of 80318706 in words is "eighty million, three hundred eighteen thousand, seven hundred six".

Divisors: 1 2 3 6 13 26 31 39 59 62 78 93 118 177 186 354 403 563 767 806 1126 1209 1534 1689 1829 2301 2418 3378 3658 4602 5487 7319 10974 14638 17453 21957 23777 33217 34906 43914 47554 52359 66434 71331 99651 104718 142662 199302 226889 431821 453778 680667 863642 1029727 1295463 1361334 2059454 2590926 3089181 6178362 13386451 26772902 40159353 80318706