130881840 has 160 divisors (see below), whose sum is σ = 425972736. Its totient is φ = 33208320.

The previous prime is 130881833. The next prime is 130881841. The reversal of 130881840 is 48188031.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (130881841) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 462339 + ... + 462621.

Almost surely, 2^130881840 is an apocalyptic number.

130881840 is a gapful number since it is divisible by the number (10) 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 130881840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (212986368).

130881840 is an abundant number, since it is smaller than the sum of its proper divisors (295090896).

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

130881840 is a wasteful number, since it uses less digits than its factorization.

130881840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 387 (or 381 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 33.

The square root of 130881840 is about 11440.3601341916. The cubic root of 130881840 is about 507.7225632884.

The spelling of 130881840 in words is "one hundred thirty million, eight hundred eighty-one thousand, eight hundred forty".