256330120 has 16 divisors (see below), whose sum is σ = 576742860. Its totient is φ = 102532032.

The previous prime is 256330099. The next prime is 256330133. The reversal of 256330120 is 21033652.

It can be written as a sum of positive squares in 2 ways, for example, as 255552196 + 777924 = 15986^2 + 882^2 .

It is a junction number, because it is equal to n+sod(n) for n = 256330091 and 256330100.

It is an unprimeable 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 3 ways as a sum of consecutive naturals, for example, 3204087 + ... + 3204166.

Almost surely, 2^256330120 is an apocalyptic number.

256330120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

256330120 is an abundant number, since it is smaller than the sum of its proper divisors (320412740).

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

256330120 is a wasteful number, since it uses less digits than its factorization.

256330120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6408264 (or 6408260 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 22.

The square root of 256330120 is about 16010.3129263609. The cubic root of 256330120 is about 635.2332373208.

Adding to 256330120 its reverse (21033652), we get a palindrome (277363772).

The spelling of 256330120 in words is "two hundred fifty-six million, three hundred thirty thousand, one hundred twenty".