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130283820 = 22325723799
BaseRepresentation
bin1111100001111…
…11100100101100
3100002011002210200
413300333210230
5231323040240
620532233500
73141252132
oct760774454
9302132720
10130283820
11675a6187
123776b890
1320cb7a24
1413435752
15b687930
hex7c3f92c

130283820 has 36 divisors (see below), whose sum is σ = 395194800. Its totient is φ = 34742304.

The previous prime is 130283819. The next prime is 130283821. The reversal of 130283820 is 28382031.

It is an interprime number because it is at equal distance from previous prime (130283819) and next prime (130283821).

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-3 number, since 3×1302838203 (a number of 25 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (130283821) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 361720 + ... + 362079.

Almost surely, 2130283820 is an apocalyptic number.

130283820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

130283820 is an abundant number, since it is smaller than the sum of its proper divisors (264910980).

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

130283820 is a wasteful number, since it uses less digits than its factorization.

130283820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 723814 (or 723809 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

The square root of 130283820 is about 11414.1937954461. The cubic root of 130283820 is about 506.9480940757.

The spelling of 130283820 in words is "one hundred thirty million, two hundred eighty-three thousand, eight hundred twenty".

Divisors: 1 2 3 4 5 6 9 10 12 15 18 20 30 36 45 60 90 180 723799 1447598 2171397 2895196 3618995 4342794 6514191 7237990 8685588 10856985 13028382 14475980 21713970 26056764 32570955 43427940 65141910 130283820