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747072205952 = 2724123172
BaseRepresentation
bin10101101111100001111…
…10010011010010000000
32122102022202011012222012
422313300332103102000
544220000441042302
61331111130032052
7104655100655402
oct12676076232200
92572282135865
10747072205952
11268916869746
12100954b78628
13555aa787047
1428230c66b72
15146768bca52
hexadf0f93480

747072205952 has 72 divisors (see below), whose sum is σ = 1499238498555. Its totient is φ = 370812702720.

The previous prime is 747072205949. The next prime is 747072205963. The reversal of 747072205952 is 259502270747.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in 5 ways, for example, as 173635556416 + 573436649536 = 416696^2 + 757256^2 .

It is an ABA number since it can be written as A⋅BA, here for A=2, B=611176.

It is a Smith number, since the sum of its digits (50) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 747072205952.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 2356694498 + ... + 2356694814.

Almost surely, 2747072205952 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 747072205952

747072205952 is an abundant number, since it is smaller than the sum of its proper divisors (752166292603).

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

747072205952 is an frugal number, since it uses more digits than its factorization.

747072205952 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1130 (or 560 counting only the distinct ones).

The product of its (nonzero) digits is 2469600, while the sum is 50.

Multiplying 747072205952 by its sum of digits (50), we get a square (37353610297600 = 61117602).

The spelling of 747072205952 in words is "seven hundred forty-seven billion, seventy-two million, two hundred five thousand, nine hundred fifty-two".

Divisors: 1 2 4 8 16 32 64 128 241 317 482 634 964 1268 1928 2536 3856 5072 7712 10144 15424 20288 30848 40576 58081 76397 100489 116162 152794 200978 232324 305588 401956 464648 611176 803912 929296 1222352 1607824 1858592 2444704 3215648 3717184 4889408 6431296 7434368 9778816 12862592 18411677 24217849 36823354 48435698 73646708 96871396 147293416 193742792 294586832 387485584 589173664 774971168 1178347328 1549942336 2356694656 3099884672 5836501609 11673003218 23346006436 46692012872 93384025744 186768051488 373536102976 747072205952