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80718080 = 285193319
BaseRepresentation
bin1001100111110…
…10100100000000
312121212220101112
410303322210000
5131130434310
612002022452
72000043452
oct463724400
9177786345
1080718080
1141621763
1223047a28
13139521a1
14aa122d2
157146705
hex4cfa900

80718080 has 72 divisors (see below), whose sum is σ = 203582400. Its totient is φ = 30578688.

The previous prime is 80718073. The next prime is 80718133. The reversal of 80718080 is 8081708.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22661 + ... + 25979.

Almost surely, 280718080 is an apocalyptic number.

80718080 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 80718080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (101791200).

80718080 is an abundant number, since it is smaller than the sum of its proper divisors (122864320).

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

80718080 is a wasteful number, since it uses less digits than its factorization.

80718080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3359 (or 3345 counting only the distinct ones).

The product of its (nonzero) digits is 3584, while the sum is 32.

The square root of 80718080 is about 8984.3241259429. The cubic root of 80718080 is about 432.1723135183.

Adding to 80718080 its reverse (8081708), we get a palindrome (88799788).

The spelling of 80718080 in words is "eighty million, seven hundred eighteen thousand, eighty".

Divisors: 1 2 4 5 8 10 16 19 20 32 38 40 64 76 80 95 128 152 160 190 256 304 320 380 608 640 760 1216 1280 1520 2432 3040 3319 4864 6080 6638 12160 13276 16595 24320 26552 33190 53104 63061 66380 106208 126122 132760 212416 252244 265520 315305 424832 504488 531040 630610 849664 1008976 1062080 1261220 2017952 2124160 2522440 4035904 4248320 5044880 8071808 10089760 16143616 20179520 40359040 80718080