Search a number
-
+
70959980 = 225713127307
BaseRepresentation
bin1000011101011…
…00001101101100
311221112010210102
410032230031230
5121131204410
611012530232
71521102260
oct416541554
9157463712
1070959980
1137067313
121b920978
1311916770
1495d20a0
15636a2a5
hex43ac36c

70959980 has 96 divisors (see below), whose sum is σ = 185450496. Its totient is φ = 22208256.

The previous prime is 70959979. The next prime is 70959997. The reversal of 70959980 is 8995907.

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 31 ways as a sum of consecutive naturals, for example, 230987 + ... + 231293.

It is an arithmetic number, because the mean of its divisors is an integer number (1931776).

Almost surely, 270959980 is an apocalyptic number.

70959980 is a gapful number since it is divisible by the number (70) 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 70959980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (92725248).

70959980 is an abundant number, since it is smaller than the sum of its proper divisors (114490516).

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

70959980 is a wasteful number, since it uses less digits than its factorization.

70959980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 463 (or 461 counting only the distinct ones).

The product of its (nonzero) digits is 204120, while the sum is 47.

The square root of 70959980 is about 8423.7746883449. The cubic root of 70959980 is about 414.0039596033.

The spelling of 70959980 in words is "seventy million, nine hundred fifty-nine thousand, nine hundred eighty".

Divisors: 1 2 4 5 7 10 13 14 20 26 28 35 52 65 70 91 127 130 140 182 254 260 307 364 455 508 614 635 889 910 1228 1270 1535 1651 1778 1820 2149 2540 3070 3302 3556 3991 4298 4445 6140 6604 7982 8255 8596 8890 10745 11557 15964 16510 17780 19955 21490 23114 27937 33020 38989 39910 42980 46228 55874 57785 77978 79820 111748 115570 139685 155956 194945 231140 272923 279370 389890 506857 545846 558740 779780 1013714 1091692 1364615 2027428 2534285 2729230 3547999 5068570 5458460 7095998 10137140 14191996 17739995 35479990 70959980