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8906288138 = 211715701849
BaseRepresentation
bin10000100101101101…
…10010110000001010
3211222200202022111122
420102312302300022
5121220002210023
64031432355242
7433464125426
oct102266626012
924880668448
108906288138
113860405110
121886845b22
13abc22b9a7
14606bbdb86
15371d6a2c8
hex212db2c0a

8906288138 has 16 divisors (see below), whose sum is σ = 14779195200. Its totient is φ = 3991293600.

The previous prime is 8906288101. The next prime is 8906288141. The reversal of 8906288138 is 8318826098.

It is a self number, because there is not a number n which added to its sum of digits gives 8906288138.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2849363 + ... + 2852486.

It is an arithmetic number, because the mean of its divisors is an integer number (923699700).

Almost surely, 28906288138 is an apocalyptic number.

8906288138 is a deficient number, since it is larger than the sum of its proper divisors (5872907062).

8906288138 is a wasteful number, since it uses less digits than its factorization.

8906288138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5701933.

The product of its (nonzero) digits is 1327104, while the sum is 53.

The square root of 8906288138 is about 94373.1325007282. The cubic root of 8906288138 is about 2072.8390441978.

The spelling of 8906288138 in words is "eight billion, nine hundred six million, two hundred eighty-eight thousand, one hundred thirty-eight".

Divisors: 1 2 11 22 71 142 781 1562 5701849 11403698 62720339 125440678 404831279 809662558 4453144069 8906288138