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68844246928 = 24171391820891
BaseRepresentation
bin100000000011101101…
…1111101011110010000
320120200212121002201021
41000013123331132100
52111443111400203
651343203045224
74655011305112
oct1000733753620
9216625532637
1068844246928
1127218867746
1211413970814
136651b75ab2
1434913233b2
151bcde155bd
hex10076fd790

68844246928 has 40 divisors (see below), whose sum is σ = 142248083040. Its totient is φ = 32164200960.

The previous prime is 68844246901. The next prime is 68844246931. The reversal of 68844246928 is 82964244886.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 872638 + ... + 948253.

It is an arithmetic number, because the mean of its divisors is an integer number (3556202076).

Almost surely, 268844246928 is an apocalyptic number.

68844246928 is a gapful number since it is divisible by the number (68) formed by its first and last digit.

It is an amenable number.

68844246928 is an abundant number, since it is smaller than the sum of its proper divisors (73403836112).

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

68844246928 is a wasteful number, since it uses less digits than its factorization.

68844246928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1821055 (or 1821049 counting only the distinct ones).

The product of its digits is 42467328, while the sum is 61.

The spelling of 68844246928 in words is "sixty-eight billion, eight hundred forty-four million, two hundred forty-six thousand, nine hundred twenty-eight".

Divisors: 1 2 4 8 16 17 34 68 136 139 272 278 556 1112 2224 2363 4726 9452 18904 37808 1820891 3641782 7283564 14567128 29134256 30955147 61910294 123820588 247641176 253103849 495282352 506207698 1012415396 2024830792 4049661584 4302765433 8605530866 17211061732 34422123464 68844246928