130258640 has 80 divisors (see below), whose sum is σ = 313479936. Its totient is φ = 50304000.

The previous prime is 130258619. The next prime is 130258649. The reversal of 130258640 is 46852031.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (130258649) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 495149 + ... + 495411.

Almost surely, 2^130258640 is an apocalyptic number.

130258640 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 130258640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (156739968).

130258640 is an abundant number, since it is smaller than the sum of its proper divisors (183221296).

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

130258640 is a wasteful number, since it uses less digits than its factorization.

130258640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 468 (or 462 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 29.

The square root of 130258640 is about 11413.0907295088. The cubic root of 130258640 is about 506.9154326256.

The spelling of 130258640 in words is "one hundred thirty million, two hundred fifty-eight thousand, six hundred forty".