Search a number
-
+
8130151440 = 243451254653
BaseRepresentation
bin1111001001001100…
…00100010000010000
3202222121022111010000
413210212010100100
5113122304321230
63422425210000
7405321101265
oct74446042020
922877274100
108130151440
1134a2293124
1216aa930900
139c74b27c8
14571aa726c
15328b58b60
hex1e4984410

8130151440 has 100 divisors (see below), whose sum is σ = 28237242924. Its totient is φ = 2168038656.

The previous prime is 8130151439. The next prime is 8130151483. The reversal of 8130151440 is 441510318.

It is a happy number.

8130151440 is a `hidden beast` number, since 81 + 30 + 1 + 514 + 40 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 3105609984 + 5024541456 = 55728^2 + 70884^2 .

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 620847 + ... + 633806.

Almost surely, 28130151440 is an apocalyptic number.

8130151440 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

8130151440 is an abundant number, since it is smaller than the sum of its proper divisors (20107091484).

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

8130151440 is a wasteful number, since it uses less digits than its factorization.

8130151440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1254678 (or 1254663 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 27.

The square root of 8130151440 is about 90167.3524065113. The cubic root of 8130151440 is about 2010.7876618922.

Adding to 8130151440 its reverse (441510318), we get a palindrome (8571661758).

The spelling of 8130151440 in words is "eight billion, one hundred thirty million, one hundred fifty-one thousand, four hundred forty".

Divisors: 1 2 3 4 5 6 8 9 10 12 15 16 18 20 24 27 30 36 40 45 48 54 60 72 80 81 90 108 120 135 144 162 180 216 240 270 324 360 405 432 540 648 720 810 1080 1296 1620 2160 3240 6480 1254653 2509306 3763959 5018612 6273265 7527918 10037224 11291877 12546530 15055836 18819795 20074448 22583754 25093060 30111672 33875631 37639590 45167508 50186120 56459385 60223344 67751262 75279180 90335016 100372240 101626893 112918770 135502524 150558360 169378155 180670032 203253786 225837540 271005048 301116720 338756310 406507572 451675080 508134465 542010096 677512620 813015144 903350160 1016268930 1355025240 1626030288 2032537860 2710050480 4065075720 8130151440