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56818243460 = 22511223478613
BaseRepresentation
bin110100111010101000…
…011001011110000100
312102122202112211022102
4310322220121132010
51412330432242320
642034004051232
74051003046366
oct647250313604
9172582484272
1056818243460
1122107465300
12b018393b18
135486508404
142a70096d36
15172825a175
hexd3aa19784

56818243460 has 36 divisors (see below), whose sum is σ = 131151537804. Its totient is φ = 20661178560.

The previous prime is 56818243423. The next prime is 56818243463. The reversal of 56818243460 is 6434281865.

It can be written as a sum of positive squares in 2 ways, for example, as 6423381316 + 50394862144 = 80146^2 + 224488^2 .

It is a Smith number, since the sum of its digits (47) 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 (56818243463) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11736887 + ... + 11741726.

Almost surely, 256818243460 is an apocalyptic number.

It is an amenable number.

56818243460 is an abundant number, since it is smaller than the sum of its proper divisors (74333294344).

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

56818243460 is a wasteful number, since it uses less digits than its factorization.

56818243460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23478644 (or 23478631 counting only the distinct ones).

The product of its (nonzero) digits is 1105920, while the sum is 47.

The spelling of 56818243460 in words is "fifty-six billion, eight hundred eighteen million, two hundred forty-three thousand, four hundred sixty".

Divisors: 1 2 4 5 10 11 20 22 44 55 110 121 220 242 484 605 1210 2420 23478613 46957226 93914452 117393065 234786130 258264743 469572260 516529486 1033058972 1291323715 2582647430 2840912173 5165294860 5681824346 11363648692 14204560865 28409121730 56818243460