130281780 has 48 divisors (see below), whose sum is σ = 369198144. Its totient is φ = 34321920.

The previous prime is 130281779. The next prime is 130281797. The reversal of 130281780 is 87182031.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8101 + ... + 18060.

It is an arithmetic number, because the mean of its divisors is an integer number (7691628).

Almost surely, 2^130281780 is an apocalyptic number.

130281780 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

130281780 is an abundant number, since it is smaller than the sum of its proper divisors (238916364).

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

130281780 is a wasteful number, since it uses less digits than its factorization.

130281780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26256 (or 26254 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 30.

The square root of 130281780 is about 11414.1044326745. The cubic root of 130281780 is about 506.9454481102.

The spelling of 130281780 in words is "one hundred thirty million, two hundred eighty-one thousand, seven hundred eighty".