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103218080 = 2557157587
BaseRepresentation
bin1100010011011…
…11101110100000
321012020000120212
412021233232200
5202410434310
614124153252
72362224230
oct611575640
9235200525
10103218080
115329a2a9
122a698828
13184cc4b4
14d9cbcc0
1590dd205
hex626fba0

103218080 has 96 divisors (see below), whose sum is σ = 280941696. Its totient is φ = 35103744.

The previous prime is 103218077. The next prime is 103218091. The reversal of 103218080 is 80812301.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 175547 + ... + 176133.

It is an arithmetic number, because the mean of its divisors is an integer number (2926476).

Almost surely, 2103218080 is an apocalyptic number.

103218080 is a gapful number since it is divisible by the number (10) 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 103218080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (140470848).

103218080 is an abundant number, since it is smaller than the sum of its proper divisors (177723616).

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

103218080 is a wasteful number, since it uses less digits than its factorization.

103218080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 766 (or 758 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 23.

The square root of 103218080 is about 10159.6299145195. The cubic root of 103218080 is about 469.0854101946.

The spelling of 103218080 in words is "one hundred three million, two hundred eighteen thousand, eighty".

Divisors: 1 2 4 5 7 8 10 14 16 20 28 32 35 40 56 70 80 112 140 157 160 224 280 314 560 587 628 785 1099 1120 1174 1256 1570 2198 2348 2512 2935 3140 4109 4396 4696 5024 5495 5870 6280 8218 8792 9392 10990 11740 12560 16436 17584 18784 20545 21980 23480 25120 32872 35168 41090 43960 46960 65744 82180 87920 92159 93920 131488 164360 175840 184318 328720 368636 460795 645113 657440 737272 921590 1290226 1474544 1843180 2580452 2949088 3225565 3686360 5160904 6451130 7372720 10321808 12902260 14745440 20643616 25804520 51609040 103218080