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88381530900 = 223252137553977
BaseRepresentation
bin101001001001111110…
…0110010001100010100
322110010110102221220100
41102103330302030110
52422001132442100
6104334002534100
76246114421515
oct1222374621424
9273113387810
1088381530900
1134534085323
1215166967330
138446720b60
1443c5d9aa0c
152474230400
hex1493f32314

88381530900 has 108 divisors (see below), whose sum is σ = 298336807132. Its totient is φ = 21755450880.

The previous prime is 88381530871. The next prime is 88381530907. The reversal of 88381530900 is 903518388.

88381530900 is a `hidden beast` number, since 88 + 38 + 1 + 530 + 9 + 0 + 0 = 666.

It can be written as a sum of positive squares in 6 ways, for example, as 1146364164 + 87235166736 = 33858^2 + 295356^2 .

It is a super-2 number, since 2×883815309002 (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (88381530907) 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 35 ways as a sum of consecutive naturals, for example, 3765289 + ... + 3788688.

Almost surely, 288381530900 is an apocalyptic number.

It is an amenable number.

88381530900 is an abundant number, since it is smaller than the sum of its proper divisors (209955276232).

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

88381530900 is a wasteful number, since it uses less digits than its factorization.

88381530900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7554010 (or 7554000 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 45.

The spelling of 88381530900 in words is "eighty-eight billion, three hundred eighty-one million, five hundred thirty thousand, nine hundred".

Divisors: 1 2 3 4 5 6 9 10 12 13 15 18 20 25 26 30 36 39 45 50 52 60 65 75 78 90 100 117 130 150 156 180 195 225 234 260 300 325 390 450 468 585 650 780 900 975 1170 1300 1950 2340 2925 3900 5850 11700 7553977 15107954 22661931 30215908 37769885 45323862 67985793 75539770 90647724 98201701 113309655 135971586 151079540 188849425 196403402 226619310 271943172 294605103 339928965 377698850 392806804 453238620 491008505 566548275 589210206 679857930 755397700 883815309 982017010 1133096550 1178420412 1359715860 1473025515 1699644825 1767630618 1964034020 2266193100 2455042525 2946051030 3399289650 3535261236 4419076545 4910085050 5892102060 6798579300 7365127575 8838153090 9820170100 14730255150 17676306180 22095382725 29460510300 44190765450 88381530900