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68569900 = 22527234259
BaseRepresentation
bin1000001011001…
…00101100101100
311210000201012221
410011210230230
5120023214100
610445405124
71461556150
oct405445454
9153021187
1068569900
1135784643
121ab697a4
131128a909
14916d060
15604701a
hex4164b2c

68569900 has 72 divisors (see below), whose sum is σ = 177488640. Its totient is φ = 22482240.

The previous prime is 68569889. The next prime is 68569927. The reversal of 68569900 is 996586.

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 23 ways as a sum of consecutive naturals, for example, 13971 + ... + 18229.

It is an arithmetic number, because the mean of its divisors is an integer number (2465120).

Almost surely, 268569900 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 68569900, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (88744320).

68569900 is an abundant number, since it is smaller than the sum of its proper divisors (108918740).

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

68569900 is a wasteful number, since it uses less digits than its factorization.

68569900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4303 (or 4296 counting only the distinct ones).

The product of its (nonzero) digits is 116640, while the sum is 43.

The square root of 68569900 is about 8280.6944153253. The cubic root of 68569900 is about 409.3026018466.

The spelling of 68569900 in words is "sixty-eight million, five hundred sixty-nine thousand, nine hundred".

Divisors: 1 2 4 5 7 10 14 20 23 25 28 35 46 50 70 92 100 115 140 161 175 230 322 350 460 575 644 700 805 1150 1610 2300 3220 4025 4259 8050 8518 16100 17036 21295 29813 42590 59626 85180 97957 106475 119252 149065 195914 212950 298130 391828 425900 489785 596260 685699 745325 979570 1371398 1490650 1959140 2448925 2742796 2981300 3428495 4897850 6856990 9795700 13713980 17142475 34284950 68569900