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68557060 = 225111323971
BaseRepresentation
bin1000001011000…
…01100100000100
311210000001121101
410011201210010
5120022311220
610445225444
71461503545
oct405414404
9153001541
1068557060
1135775a30
121ab62284
1311284b10
1491684cc
15604330a
hex4161904

68557060 has 48 divisors (see below), whose sum is σ = 169146432. Its totient is φ = 23011200.

The previous prime is 68557009. The next prime is 68557061. The reversal of 68557060 is 6075586.

It is a Smith number, since the sum of its digits (37) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (68557061) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9126 + ... + 14845.

It is an arithmetic number, because the mean of its divisors is an integer number (3523884).

Almost surely, 268557060 is an apocalyptic number.

It is an amenable number.

68557060 is an abundant number, since it is smaller than the sum of its proper divisors (100589372).

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

68557060 is a wasteful number, since it uses less digits than its factorization.

68557060 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24004 (or 24002 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 37.

The square root of 68557060 is about 8279.9190817302. The cubic root of 68557060 is about 409.2770523782.

The spelling of 68557060 in words is "sixty-eight million, five hundred fifty-seven thousand, sixty".

Divisors: 1 2 4 5 10 11 13 20 22 26 44 52 55 65 110 130 143 220 260 286 572 715 1430 2860 23971 47942 95884 119855 239710 263681 311623 479420 527362 623246 1054724 1246492 1318405 1558115 2636810 3116230 3427853 5273620 6232460 6855706 13711412 17139265 34278530 68557060