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130720410 = 23251452449
BaseRepresentation
bin1111100101010…
…10001010011010
3100002222021200200
413302222022122
5231431023120
620545443030
73145051032
oct762521232
9302867620
10130720410
11678741a7
1237940476
132110b672
141350a8c2
15b721e90
hex7caa29a

130720410 has 24 divisors (see below), whose sum is σ = 339873300. Its totient is φ = 34858752.

The previous prime is 130720379. The next prime is 130720427. The reversal of 130720410 is 14027031.

It can be written as a sum of positive squares in 2 ways, for example, as 129481641 + 1238769 = 11379^2 + 1113^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 726135 + ... + 726314.

Almost surely, 2130720410 is an apocalyptic number.

130720410 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

130720410 is an abundant number, since it is smaller than the sum of its proper divisors (209152890).

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

130720410 is a wasteful number, since it uses less digits than its factorization.

130720410 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1452462 (or 1452459 counting only the distinct ones).

The product of its (nonzero) digits is 168, while the sum is 18.

The square root of 130720410 is about 11433.3026724565. The cubic root of 130720410 is about 507.5137353009.

Adding to 130720410 its reverse (14027031), we get a palindrome (144747441).

The spelling of 130720410 in words is "one hundred thirty million, seven hundred twenty thousand, four hundred ten".

Divisors: 1 2 3 5 6 9 10 15 18 30 45 90 1452449 2904898 4357347 7262245 8714694 13072041 14524490 21786735 26144082 43573470 65360205 130720410