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68861030 = 2576311559
BaseRepresentation
bin1000001101010…
…11110001100110
311210120111120112
410012223301212
5120112023110
610455533022
71464211010
oct406536146
9153514515
1068861030
1135963347
121b08a172
1311360294
1492071b0
1560a3405
hex41abc66

68861030 has 32 divisors (see below), whose sum is σ = 141972480. Its totient is φ = 23556960.

The previous prime is 68861029. The next prime is 68861069. The reversal of 68861030 is 3016886.

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 15 ways as a sum of consecutive naturals, for example, 43391 + ... + 44949.

It is an arithmetic number, because the mean of its divisors is an integer number (4436640).

Almost surely, 268861030 is an apocalyptic number.

68861030 is an abundant number, since it is smaller than the sum of its proper divisors (73111450).

68861030 is a wasteful number, since it uses less digits than its factorization.

68861030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2204.

The product of its (nonzero) digits is 6912, while the sum is 32.

The square root of 68861030 is about 8298.2546357653. The cubic root of 68861030 is about 409.8810481812.

The spelling of 68861030 in words is "sixty-eight million, eight hundred sixty-one thousand, thirty".

Divisors: 1 2 5 7 10 14 35 70 631 1262 1559 3118 3155 4417 6310 7795 8834 10913 15590 21826 22085 44170 54565 109130 983729 1967458 4918645 6886103 9837290 13772206 34430515 68861030