130000256 has 16 divisors (see below), whose sum is σ = 258985140. Its totient is φ = 65000064.

The previous prime is 130000229. The next prime is 130000349. The reversal of 130000256 is 652000031.

It is a tau number, because it is divible by the number of its divisors (16).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 507686 + ... + 507941.

Almost surely, 2^130000256 is an apocalyptic number.

130000256 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

130000256 is the 6095-th centered heptagonal number.

It is an amenable number.

130000256 is a deficient number, since it is larger than the sum of its proper divisors (128984884).

130000256 is an equidigital number, since it uses as much as digits as its factorization.

130000256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1015641 (or 1015629 counting only the distinct ones).

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

The square root of 130000256 is about 11401.7654773285. The cubic root of 130000256 is about 506.5800344340.

Adding to 130000256 its reverse (652000031), we get a palindrome (782000287).

It can be divided in two parts, 13000025 and 6, that added together give a palindrome (13000031).

The spelling of 130000256 in words is "one hundred thirty million, two hundred fifty-six", and thus it is an aban number.