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47638712780 = 2252381935639
BaseRepresentation
bin101100010111011111…
…010001000111001100
311112222000122100111122
4230113133101013030
51240031002302110
633515050540112
73304350243311
oct542737210714
9145860570448
1047638712780
11192268a200a
129296137638
1346527b9a59
14243ccaad08
15138c419255
hexb177d11cc

47638712780 has 12 divisors (see below), whose sum is σ = 100041296880. Its totient is φ = 19055485104.

The previous prime is 47638712773. The next prime is 47638712783. The reversal of 47638712780 is 8721783674.

It is not an unprimeable number, because it can be changed into a prime (47638712783) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 1190967800 + ... + 1190967839.

It is an arithmetic number, because the mean of its divisors is an integer number (8336774740).

Almost surely, 247638712780 is an apocalyptic number.

It is an amenable number.

47638712780 is an abundant number, since it is smaller than the sum of its proper divisors (52402584100).

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

47638712780 is a wasteful number, since it uses less digits than its factorization.

47638712780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2381935648 (or 2381935646 counting only the distinct ones).

The product of its (nonzero) digits is 3161088, while the sum is 53.

The spelling of 47638712780 in words is "forty-seven billion, six hundred thirty-eight million, seven hundred twelve thousand, seven hundred eighty".

Divisors: 1 2 4 5 10 20 2381935639 4763871278 9527742556 11909678195 23819356390 47638712780