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130656 = 2531361
BaseRepresentation
bin11111111001100000
320122020010
4133321200
513140111
62444520
71052631
oct377140
9218203
10130656
118a189
1263740
1347616
1435888
1528aa6
hex1fe60

130656 has 24 divisors (see below), whose sum is σ = 343224. Its totient is φ = 43520.

The previous prime is 130651. The next prime is 130657. The reversal of 130656 is 656031.

It is a tau number, because it is divible by the number of its divisors (24).

It is a plaindrome in base 14.

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 (130651) by changing a digit.

130656 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 585 + ... + 776.

It is an arithmetic number, because the mean of its divisors is an integer number (14301).

2130656 is an apocalyptic number.

130656 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

130656 is an abundant number, since it is smaller than the sum of its proper divisors (212568).

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

130656 is a wasteful number, since it uses less digits than its factorization.

130656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1374 (or 1366 counting only the distinct ones).

The product of its (nonzero) digits is 540, while the sum is 21.

The square root of 130656 is about 361.4636911226. The cubic root of 130656 is about 50.7430365688.

Adding to 130656 its reverse (656031), we get a palindrome (786687).

The spelling of 130656 in words is "one hundred thirty thousand, six hundred fifty-six".

Divisors: 1 2 3 4 6 8 12 16 24 32 48 96 1361 2722 4083 5444 8166 10888 16332 21776 32664 43552 65328 130656