130861008 has 100 divisors (see below), whose sum is σ = 389128740. Its totient is φ = 42425856.

The previous prime is 130861001. The next prime is 130861057. The reversal of 130861008 is 800168031.

It can be written as a sum of positive squares in 2 ways, for example, as 122146704 + 8714304 = 11052^2 + 2952^2 .

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (130861001) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 46588 + ... + 49316.

Almost surely, 2^130861008 is an apocalyptic number.

130861008 is a gapful number since it is divisible by the number (18) 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 130861008, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (194564370).

130861008 is an abundant number, since it is smaller than the sum of its proper divisors (258267732).

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

130861008 is a wasteful number, since it uses less digits than its factorization.

130861008 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2786 (or 2771 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 27.

The square root of 130861008 is about 11439.4496371110. The cubic root of 130861008 is about 507.6956243903.

The spelling of 130861008 in words is "one hundred thirty million, eight hundred sixty-one thousand, eight".