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130730 = 2517769
BaseRepresentation
bin11111111010101010
320122022212
4133322222
513140410
62445122
71053065
oct377252
9218285
10130730
118a246
12637a2
1347672
14358dc
1528b05
hex1feaa

130730 has 16 divisors (see below), whose sum is σ = 249480. Its totient is φ = 49152.

The previous prime is 130729. The next prime is 130769. The reversal of 130730 is 37031.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 113569 + 17161 = 337^2 + 131^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 215 + ... + 554.

2130730 is an apocalyptic number.

130730 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

130730 is a deficient number, since it is larger than the sum of its proper divisors (118750).

130730 is a wasteful number, since it uses less digits than its factorization.

130730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 793.

The product of its (nonzero) digits is 63, while the sum is 14.

The square root of 130730 is about 361.5660382281. The cubic root of 130730 is about 50.7526145854.

Adding to 130730 its reverse (37031), we get a palindrome (167761).

The spelling of 130730 in words is "one hundred thirty thousand, seven hundred thirty".

Divisors: 1 2 5 10 17 34 85 170 769 1538 3845 7690 13073 26146 65365 130730