130243784 has 64 divisors (see below), whose sum is σ = 285249600. Its totient is φ = 55123200.

The previous prime is 130243777. The next prime is 130243807. The reversal of 130243784 is 487342031.

It is a self number, because there is not a number n which added to its sum of digits gives 130243784.

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, 101354 + ... + 102630.

It is an arithmetic number, because the mean of its divisors is an integer number (4457025).

Almost surely, 2^130243784 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 130243784, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (142624800).

130243784 is an abundant number, since it is smaller than the sum of its proper divisors (155005816).

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

130243784 is a wasteful number, since it uses less digits than its factorization.

130243784 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1374 (or 1370 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 32.

The square root of 130243784 is about 11412.4398793597. The cubic root of 130243784 is about 506.8961606552.

The spelling of 130243784 in words is "one hundred thirty million, two hundred forty-three thousand, seven hundred eighty-four".