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8987960673 = 3217411432801
BaseRepresentation
bin10000101111011100…
…10110010101100001
3212012101102201011100
420113232112111201
5121401404220143
64043511105013
7435505255656
oct102756262541
925171381140
108987960673
1138a251897a
1218aa072169
13b03126433
1461399dc2d
153790ee6d3
hex217b96561

8987960673 has 24 divisors (see below), whose sum is σ = 14081578056. Its totient is φ = 5501952000.

The previous prime is 8987960651. The next prime is 8987960693. The reversal of 8987960673 is 3760697898.

It is a happy number.

8987960673 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 1933976529 + 7053984144 = 43977^2 + 83988^2 .

It is not a de Polignac number, because 8987960673 - 212 = 8987956577 is a prime.

It is a super-2 number, since 2×89879606732 (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 8987960673.

It is not an unprimeable number, because it can be changed into a prime (8987960693) 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 23 ways as a sum of consecutive naturals, for example, 710128 + ... + 722673.

It is an arithmetic number, because the mean of its divisors is an integer number (586732419).

Almost surely, 28987960673 is an apocalyptic number.

It is an amenable number.

8987960673 is a deficient number, since it is larger than the sum of its proper divisors (5093617383).

8987960673 is a wasteful number, since it uses less digits than its factorization.

8987960673 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1432865 (or 1432862 counting only the distinct ones).

The product of its (nonzero) digits is 27433728, while the sum is 63.

The square root of 8987960673 is about 94804.8557458952. The cubic root of 8987960673 is about 2079.1558977092.

The spelling of 8987960673 in words is "eight billion, nine hundred eighty-seven million, nine hundred sixty thousand, six hundred seventy-three".

Divisors: 1 3 9 17 41 51 123 153 369 697 2091 6273 1432801 4298403 12895209 24357617 58744841 73072851 176234523 219218553 528703569 998662297 2995986891 8987960673