130218440 has 32 divisors (see below), whose sum is σ = 319628160. Its totient is φ = 47352000.

The previous prime is 130218437. The next prime is 130218449. The reversal of 130218440 is 44812031.

It is not an unprimeable number, because it can be changed into a prime (130218449) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 147536 + ... + 148415.

It is an arithmetic number, because the mean of its divisors is an integer number (9988380).

Almost surely, 2^130218440 is an apocalyptic number.

130218440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

130218440 is an abundant number, since it is smaller than the sum of its proper divisors (189409720).

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

130218440 is a wasteful number, since it uses less digits than its factorization.

130218440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 295973 (or 295969 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 23.

The square root of 130218440 is about 11411.3294580430. The cubic root of 130218440 is about 506.8632797266.

The spelling of 130218440 in words is "one hundred thirty million, two hundred eighteen thousand, four hundred forty".