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87427482940 = 2257624482021
BaseRepresentation
bin101000101101100010…
…1011000010100111100
322100122222020022010201
41101123011120110330
52413022413423230
6104055202213244
76213351225550
oct1213305302474
9270588208121
1087427482940
1134094597a36
1214b3b354224
138323b82735
1443353b1860
15241a5c95ca
hex145b15853c

87427482940 has 24 divisors (see below), whose sum is σ = 209825959392. Its totient is φ = 29975136960.

The previous prime is 87427482937. The next prime is 87427482971. The reversal of 87427482940 is 4928472478.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 312240871 + ... + 312241150.

It is an arithmetic number, because the mean of its divisors is an integer number (8742748308).

Almost surely, 287427482940 is an apocalyptic number.

It is an amenable number.

87427482940 is an abundant number, since it is smaller than the sum of its proper divisors (122398476452).

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

87427482940 is a wasteful number, since it uses less digits than its factorization.

87427482940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 624482037 (or 624482035 counting only the distinct ones).

The product of its (nonzero) digits is 7225344, while the sum is 55.

The spelling of 87427482940 in words is "eighty-seven billion, four hundred twenty-seven million, four hundred eighty-two thousand, nine hundred forty".

Divisors: 1 2 4 5 7 10 14 20 28 35 70 140 624482021 1248964042 2497928084 3122410105 4371374147 6244820210 8742748294 12489640420 17485496588 21856870735 43713741470 87427482940