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68622160 = 2454911747
BaseRepresentation
bin1000001011100…
…01011101010000
311210010100220111
410011301131100
5120031402120
610450451104
71462164415
oct405613520
9153110814
1068622160
113580a932
121ab93a94
13112a8639
14918410c
15605775a
hex4171750

68622160 has 40 divisors (see below), whose sum is σ = 159962976. Its totient is φ = 27377280.

The previous prime is 68622131. The next prime is 68622163. The reversal of 68622160 is 6122686.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68622163) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 38407 + ... + 40153.

Almost surely, 268622160 is an apocalyptic number.

It is an amenable number.

68622160 is an abundant number, since it is smaller than the sum of its proper divisors (91340816).

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

68622160 is a wasteful number, since it uses less digits than its factorization.

68622160 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2251 (or 2245 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 31.

The square root of 68622160 is about 8283.8493467711. The cubic root of 68622160 is about 409.4065576745.

The spelling of 68622160 in words is "sixty-eight million, six hundred twenty-two thousand, one hundred sixty".

Divisors: 1 2 4 5 8 10 16 20 40 80 491 982 1747 1964 2455 3494 3928 4910 6988 7856 8735 9820 13976 17470 19640 27952 34940 39280 69880 139760 857777 1715554 3431108 4288885 6862216 8577770 13724432 17155540 34311080 68622160