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52781027980 = 22525131193371
BaseRepresentation
bin110001001001111111…
…101001001010001100
312001020101211000211011
4301021333221022030
51331043420343410
640125224335004
73545651223022
oct611177511214
9161211730734
1052781027980
112042557258a
12a290314464
134c91c86705
1427a9c16712
15158dad318a
hexc49fe928c

52781027980 has 48 divisors (see below), whose sum is σ = 111350453760. Its totient is φ = 21015320000.

The previous prime is 52781027977. The next prime is 52781027983. The reversal of 52781027980 is 8972018725.

52781027980 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (52781027977) and next prime (52781027983).

It is not an unprimeable number, because it can be changed into a prime (52781027983) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15655695 + ... + 15659065.

It is an arithmetic number, because the mean of its divisors is an integer number (2319801120).

Almost surely, 252781027980 is an apocalyptic number.

It is an amenable number.

52781027980 is an abundant number, since it is smaller than the sum of its proper divisors (58569425780).

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

52781027980 is a wasteful number, since it uses less digits than its factorization.

52781027980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6750 (or 6748 counting only the distinct ones).

The product of its (nonzero) digits is 564480, while the sum is 49.

The spelling of 52781027980 in words is "fifty-two billion, seven hundred eighty-one million, twenty-seven thousand, nine hundred eighty".

Divisors: 1 2 4 5 10 20 251 502 1004 1255 2510 3119 3371 5020 6238 6742 12476 13484 15595 16855 31190 33710 62380 67420 782869 846121 1565738 1692242 3131476 3384484 3914345 4230605 7828690 8461210 10514149 15657380 16922420 21028298 42056596 52570745 105141490 210282980 2639051399 5278102798 10556205596 13195256995 26390513990 52781027980