130207440 has 320 divisors, whose sum is σ = 477683712. Its totient is φ = 29030400.

The previous prime is 130207423. The next prime is 130207447. The reversal of 130207440 is 44702031.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (130207447) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3028059 + ... + 3028101.

Almost surely, 2^130207440 is an apocalyptic number.

130207440 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 130207440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (238841856).

130207440 is an abundant number, since it is smaller than the sum of its proper divisors (347476272).

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

130207440 is a wasteful number, since it uses less digits than its factorization.

130207440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138 (or 132 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 21.

The square root of 130207440 is about 11410.8474707184. The cubic root of 130207440 is about 506.8490071626.

Adding to 130207440 its reverse (44702031), we get a palindrome (174909471).

The spelling of 130207440 in words is "one hundred thirty million, two hundred seven thousand, four hundred forty".