130811856 has 80 divisors (see below), whose sum is σ = 403021824. Its totient is φ = 35747712.

The previous prime is 130811843. The next prime is 130811861. The reversal of 130811856 is 658118031.

It is a super-2 number, since 2×130811856² = 34223483340329472, which contains 22 as substring.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 736 + ... + 16191.

Almost surely, 2^130811856 is an apocalyptic number.

130811856 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 130811856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (201510912).

130811856 is an abundant number, since it is smaller than the sum of its proper divisors (272209968).

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

130811856 is a wasteful number, since it uses less digits than its factorization.

130811856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16968 (or 16962 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 33.

The square root of 130811856 is about 11437.3010802374. The cubic root of 130811856 is about 507.6320521552.

Adding to 130811856 its reverse (658118031), we get a palindrome (788929887).

The spelling of 130811856 in words is "one hundred thirty million, eight hundred eleven thousand, eight hundred fifty-six".