Search a number
-
+
830712080 = 245111277433
BaseRepresentation
bin110001100000111…
…010100100010000
32010220010112202002
4301200322210100
53200130241310
6214233013132
726404636052
oct6140724420
92126115662
10830712080
11396a08310
121b22541a8
13103147013
147c4818d2
154cde1da5
hex3183a910

830712080 has 80 divisors (see below), whose sum is σ = 2123864064. Its totient is φ = 299658240.

The previous prime is 830712073. The next prime is 830712083. The reversal of 830712080 is 80217038.

It is a tau number, because it is divible by the number of its divisors (80).

It is not an unprimeable number, because it can be changed into a prime (830712083) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 108044 + ... + 115476.

Almost surely, 2830712080 is an apocalyptic number.

830712080 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 830712080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1061932032).

830712080 is an abundant number, since it is smaller than the sum of its proper divisors (1293151984).

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

830712080 is a wasteful number, since it uses less digits than its factorization.

830712080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7584 (or 7578 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 29.

The square root of 830712080 is about 28822.0762610885. The cubic root of 830712080 is about 940.0483150057.

The spelling of 830712080 in words is "eight hundred thirty million, seven hundred twelve thousand, eighty".

Divisors: 1 2 4 5 8 10 11 16 20 22 40 44 55 80 88 110 127 176 220 254 440 508 635 880 1016 1270 1397 2032 2540 2794 5080 5588 6985 7433 10160 11176 13970 14866 22352 27940 29732 37165 55880 59464 74330 81763 111760 118928 148660 163526 297320 327052 408815 594640 654104 817630 943991 1308208 1635260 1887982 3270520 3775964 4719955 6541040 7551928 9439910 10383901 15103856 18879820 20767802 37759640 41535604 51919505 75519280 83071208 103839010 166142416 207678020 415356040 830712080