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68888138200 = 2352749205813
BaseRepresentation
bin100000000101000001…
…1011001000111011000
320120210221012000012221
41000022003121013120
52112040330410300
651351411513424
74656053341030
oct1001203310730
9216727160187
1068888138200
1127240615922
12114265b8874
13665aca286b
1434970aa8c0
151bd2bd531a
hex100a0d91d8

68888138200 has 48 divisors (see below), whose sum is σ = 183045628080. Its totient is φ = 23618789760.

The previous prime is 68888138197. The next prime is 68888138233. The reversal of 68888138200 is 283188886.

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 11 ways as a sum of consecutive naturals, for example, 24601507 + ... + 24604306.

It is an arithmetic number, because the mean of its divisors is an integer number (3813450585).

Almost surely, 268888138200 is an apocalyptic number.

It is an amenable number.

68888138200 is an abundant number, since it is smaller than the sum of its proper divisors (114157489880).

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

68888138200 is a wasteful number, since it uses less digits than its factorization.

68888138200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49205836 (or 49205827 counting only the distinct ones).

The product of its (nonzero) digits is 1179648, while the sum is 52.

The spelling of 68888138200 in words is "sixty-eight billion, eight hundred eighty-eight million, one hundred thirty-eight thousand, two hundred".

Divisors: 1 2 4 5 7 8 10 14 20 25 28 35 40 50 56 70 100 140 175 200 280 350 700 1400 49205813 98411626 196823252 246029065 344440691 393646504 492058130 688881382 984116260 1230145325 1377762764 1722203455 1968232520 2460290650 2755525528 3444406910 4920581300 6888813820 8611017275 9841162600 13777627640 17222034550 34444069100 68888138200