130005780 has 24 divisors (see below), whose sum is σ = 364016352. Its totient is φ = 34668192.

The previous prime is 130005779. The next prime is 130005787. The reversal of 130005780 is 87500031.

130005780 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 130005780.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (130005787) 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, 1083322 + ... + 1083441.

It is an arithmetic number, because the mean of its divisors is an integer number (15167348).

Almost surely, 2^130005780 is an apocalyptic number.

130005780 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

130005780 is an abundant number, since it is smaller than the sum of its proper divisors (234010572).

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

130005780 is a wasteful number, since it uses less digits than its factorization.

130005780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2166775 (or 2166773 counting only the distinct ones).

The product of its (nonzero) digits is 840, while the sum is 24.

The square root of 130005780 is about 11402.0077179416. The cubic root of 130005780 is about 506.5872095698.

The spelling of 130005780 in words is "one hundred thirty million, five thousand, seven hundred eighty".