130678920 has 160 divisors (see below), whose sum is σ = 448101720. Its totient is φ = 34145280.

The previous prime is 130678913. The next prime is 130678921. The reversal of 130678920 is 29876031.

It can be written as a sum of positive squares in 4 ways, for example, as 74338884 + 56340036 = 8622^2 + 7506^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (130678921) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 171340 + ... + 172100.

Almost surely, 2^130678920 is an apocalyptic number.

130678920 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 130678920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (224050860).

130678920 is an abundant number, since it is smaller than the sum of its proper divisors (317422800).

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

130678920 is a wasteful number, since it uses less digits than its factorization.

130678920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 837 (or 824 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 36.

The square root of 130678920 is about 11431.4880921077. The cubic root of 130678920 is about 507.4600355177.

The spelling of 130678920 in words is "one hundred thirty million, six hundred seventy-eight thousand, nine hundred twenty".