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130870 = 2523569
BaseRepresentation
bin11111111100110110
320122112001
4133330312
513141440
62445514
71053355
oct377466
9218461
10130870
118a363
126389a
134774c
143599c
1528b9a
hex1ff36

130870 has 16 divisors (see below), whose sum is σ = 246240. Its totient is φ = 49984.

The previous prime is 130859. The next prime is 130873. The reversal of 130870 is 78031.

It is a plaindrome in base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (130873) by changing a digit.

130870 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 55 + ... + 514.

It is an arithmetic number, because the mean of its divisors is an integer number (15390).

2130870 is an apocalyptic number.

130870 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

130870 is a deficient number, since it is larger than the sum of its proper divisors (115370).

130870 is a wasteful number, since it uses less digits than its factorization.

130870 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 599.

The product of its (nonzero) digits is 168, while the sum is 19.

The square root of 130870 is about 361.7595886773. The cubic root of 130870 is about 50.7707252745.

It can be divided in two parts, 1308 and 70, that added together give a triangular number (1378 = T52).

The spelling of 130870 in words is "one hundred thirty thousand, eight hundred seventy".

Divisors: 1 2 5 10 23 46 115 230 569 1138 2845 5690 13087 26174 65435 130870