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256130 = 2573659
BaseRepresentation
bin111110100010000010
3111000100022
4332202002
531144010
65253442
72114510
oct764202
9430308
10256130
11165486
12104282
138c774
14694b0
1550d55
hex3e882

256130 has 16 divisors (see below), whose sum is σ = 527040. Its totient is φ = 87792.

The previous prime is 256129. The next prime is 256133. The reversal of 256130 is 31652.

It is a junction number, because it is equal to n+sod(n) for n = 256099 and 256108.

It is not an unprimeable number, because it can be changed into a prime (256133) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1760 + ... + 1899.

It is an arithmetic number, because the mean of its divisors is an integer number (32940).

2256130 is an apocalyptic number.

256130 is an abundant number, since it is smaller than the sum of its proper divisors (270910).

It is a weird number, because it is abundant, but not a pseudoperfect number.

256130 is a wasteful number, since it uses less digits than its factorization.

256130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3673.

The product of its (nonzero) digits is 180, while the sum is 17.

The square root of 256130 is about 506.0928768517. The cubic root of 256130 is about 63.5067882879.

Adding to 256130 its reverse (31652), we get a palindrome (287782).

The spelling of 256130 in words is "two hundred fifty-six thousand, one hundred thirty".

Divisors: 1 2 5 7 10 14 35 70 3659 7318 18295 25613 36590 51226 128065 256130