256324130 has 16 divisors (see below), whose sum is σ = 488523960. Its totient is φ = 96498432.

The previous prime is 256324093. The next prime is 256324153. The reversal of 256324130 is 31423652.

It can be written as a sum of positive squares in 4 ways, for example, as 225930961 + 30393169 = 15031^2 + 5513^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 256324130.

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 7 ways as a sum of consecutive naturals, for example, 753725 + ... + 754064.

Almost surely, 2^256324130 is an apocalyptic number.

256324130 is a deficient number, since it is larger than the sum of its proper divisors (232199830).

256324130 is a wasteful number, since it uses less digits than its factorization.

256324130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1507813.

The product of its (nonzero) digits is 4320, while the sum is 26.

The square root of 256324130 is about 16010.1258583435. The cubic root of 256324130 is about 635.2282891745.

Adding to 256324130 its reverse (31423652), we get a palindrome (287747782).

The spelling of 256324130 in words is "two hundred fifty-six million, three hundred twenty-four thousand, one hundred thirty".