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8638975002 = 2371491380469
BaseRepresentation
bin10000000101110110…
…00100110000011010
3211022001202101211010
420002323010300122
5120143034200002
63545123114350
7424040035020
oct100273046032
924261671733
108638975002
113733526869
1218112129b6
13a78a36b38
145bd4b8710
1535866646c
hex202ec4c1a

8638975002 has 32 divisors (see below), whose sum is σ = 19878768000. Its totient is φ = 2451711168.

The previous prime is 8638974997. The next prime is 8638975019. The reversal of 8638975002 is 2005798368.

It is a super-3 number, since 3×86389750023 (a number of 31 digits) contains 333 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 683977 + ... + 696492.

It is an arithmetic number, because the mean of its divisors is an integer number (621211500).

Almost surely, 28638975002 is an apocalyptic number.

8638975002 is an abundant number, since it is smaller than the sum of its proper divisors (11239792998).

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

8638975002 is a wasteful number, since it uses less digits than its factorization.

8638975002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1380630.

The product of its (nonzero) digits is 725760, while the sum is 48.

The square root of 8638975002 is about 92946.0865340763. The cubic root of 8638975002 is about 2051.8899882694.

The spelling of 8638975002 in words is "eight billion, six hundred thirty-eight million, nine hundred seventy-five thousand, two".

Divisors: 1 2 3 6 7 14 21 42 149 298 447 894 1043 2086 3129 6258 1380469 2760938 4141407 8282814 9663283 19326566 28989849 57979698 205689881 411379762 617069643 1234139286 1439829167 2879658334 4319487501 8638975002