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80858080 = 255796397
BaseRepresentation
bin1001101000111…
…00101111100000
312122011000102201
410310130233200
5131144424310
612005022544
72001165562
oct464345740
9178130381
1080858080
1141707966
12230b4a54
13139a0b24
14aa4b332
157172e3a
hex4d1cbe0

80858080 has 48 divisors (see below), whose sum is σ = 193475520. Its totient is φ = 31928832.

The previous prime is 80858051. The next prime is 80858117. The reversal of 80858080 is 8085808.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9442 + ... + 15838.

It is an arithmetic number, because the mean of its divisors is an integer number (4030740).

Almost surely, 280858080 is an apocalyptic number.

80858080 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 80858080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (96737760).

80858080 is an abundant number, since it is smaller than the sum of its proper divisors (112617440).

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

80858080 is a wasteful number, since it uses less digits than its factorization.

80858080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6491 (or 6483 counting only the distinct ones).

The product of its (nonzero) digits is 20480, while the sum is 37.

The square root of 80858080 is about 8992.1120989454. The cubic root of 80858080 is about 432.4220269962.

The spelling of 80858080 in words is "eighty million, eight hundred fifty-eight thousand, eighty".

Divisors: 1 2 4 5 8 10 16 20 32 40 79 80 158 160 316 395 632 790 1264 1580 2528 3160 6320 6397 12640 12794 25588 31985 51176 63970 102352 127940 204704 255880 505363 511760 1010726 1023520 2021452 2526815 4042904 5053630 8085808 10107260 16171616 20214520 40429040 80858080