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130844 = 2274673
BaseRepresentation
bin11111111100011100
320122111002
4133330130
513141334
62445432
71053320
oct377434
9218432
10130844
118a33a
1263878
134772c
1435980
1528b7e
hex1ff1c

130844 has 12 divisors (see below), whose sum is σ = 261744. Its totient is φ = 56064.

The previous prime is 130843. The next prime is 130859. The reversal of 130844 is 448031.

130844 = T57 + T58 + ... + T98.

130844 is an admirable number.

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (130841) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2309 + ... + 2364.

It is an arithmetic number, because the mean of its divisors is an integer number (21812).

2130844 is an apocalyptic number.

130844 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

130844 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

130844 is a wasteful number, since it uses less digits than its factorization.

130844 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4684 (or 4682 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 130844 is about 361.7236514247. The cubic root of 130844 is about 50.7673628377.

Adding to 130844 its reverse (448031), we get a palindrome (578875).

The spelling of 130844 in words is "one hundred thirty thousand, eight hundred forty-four".

Divisors: 1 2 4 7 14 28 4673 9346 18692 32711 65422 130844