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4280128086 = 231354873437
BaseRepresentation
bin1111111100011101…
…1001001001010110
3102001021211000221110
43333013121021112
532231203044321
61544413555450
7211031326353
oct37707311126
912037730843
104280128086
1118a7025643
129b54a5b86
13532982490
142c863362a
151a0b5b176
hexff1d9256

4280128086 has 16 divisors (see below), whose sum is σ = 9218737584. Its totient is φ = 1316962464.

The previous prime is 4280128001. The next prime is 4280128087. The reversal of 4280128086 is 6808210824.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4280128087) 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 7 ways as a sum of consecutive naturals, for example, 27436641 + ... + 27436796.

It is an arithmetic number, because the mean of its divisors is an integer number (576171099).

Almost surely, 24280128086 is an apocalyptic number.

4280128086 is an abundant number, since it is smaller than the sum of its proper divisors (4938609498).

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

4280128086 is a wasteful number, since it uses less digits than its factorization.

4280128086 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54873455.

The product of its (nonzero) digits is 49152, while the sum is 39.

The square root of 4280128086 is about 65422.6878536796. The cubic root of 4280128086 is about 1623.6244720760.

The spelling of 4280128086 in words is "four billion, two hundred eighty million, one hundred twenty-eight thousand, eighty-six".

Divisors: 1 2 3 6 13 26 39 78 54873437 109746874 164620311 329240622 713354681 1426709362 2140064043 4280128086