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8890131390 = 2357137309007
BaseRepresentation
bin10000100011110010…
…01010001110111110
3211221120100110121120
420101321022032332
5121201333201030
64030054211410
7433206604260
oct102171121676
924846313546
108890131390
11385227a328
121881353b66
13ab8a9299a
146049b5b30
15370728010
hex211e4a3be

8890131390 has 64 divisors (see below), whose sum is σ = 24562427904. Its totient is φ = 2017191168.

The previous prime is 8890131353. The next prime is 8890131433. The reversal of 8890131390 is 931310988.

It is a happy number.

8890131390 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×88901313902 (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a Curzon number.

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 31 ways as a sum of consecutive naturals, for example, 125734 + ... + 183273.

It is an arithmetic number, because the mean of its divisors is an integer number (383787936).

Almost surely, 28890131390 is an apocalyptic number.

8890131390 is an abundant number, since it is smaller than the sum of its proper divisors (15672296514).

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

8890131390 is a wasteful number, since it uses less digits than its factorization.

8890131390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 309161.

The product of its (nonzero) digits is 46656, while the sum is 42.

The square root of 8890131390 is about 94287.4932851648. The cubic root of 8890131390 is about 2071.5848513018.

The spelling of 8890131390 in words is "eight billion, eight hundred ninety million, one hundred thirty-one thousand, three hundred ninety".

Divisors: 1 2 3 5 6 7 10 14 15 21 30 35 42 70 105 137 210 274 411 685 822 959 1370 1918 2055 2877 4110 4795 5754 9590 14385 28770 309007 618014 927021 1545035 1854042 2163049 3090070 4326098 4635105 6489147 9270210 10815245 12978294 21630490 32445735 42333959 64891470 84667918 127001877 211669795 254003754 296337713 423339590 592675426 635009385 889013139 1270018770 1481688565 1778026278 2963377130 4445065695 8890131390