130668440 has 32 divisors (see below), whose sum is σ = 336005280. Its totient is φ = 44800512.

The previous prime is 130668407. The next prime is 130668469. The reversal of 130668440 is 44866031.

It is a junction number, because it is equal to n+sod(n) for n = 130668397 and 130668406.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 233057 + ... + 233616.

It is an arithmetic number, because the mean of its divisors is an integer number (10500165).

Almost surely, 2^130668440 is an apocalyptic number.

130668440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

130668440 is an abundant number, since it is smaller than the sum of its proper divisors (205336840).

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

130668440 is a wasteful number, since it uses less digits than its factorization.

130668440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 466691 (or 466687 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 32.

The square root of 130668440 is about 11431.0296999002. The cubic root of 130668440 is about 507.4464696384.

The spelling of 130668440 in words is "one hundred thirty million, six hundred sixty-eight thousand, four hundred forty".