130402720 has 72 divisors (see below), whose sum is σ = 358396164. Its totient is φ = 44706816.

The previous prime is 130402669. The next prime is 130402759. The reversal of 130402720 is 27204031.

It can be written as a sum of positive squares in 2 ways, for example, as 121088016 + 9314704 = 11004^2 + 3052^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 477 + ... + 16156.

Almost surely, 2^130402720 is an apocalyptic number.

130402720 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 130402720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (179198082).

130402720 is an abundant number, since it is smaller than the sum of its proper divisors (227993444).

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

130402720 is a wasteful number, since it uses less digits than its factorization.

130402720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16662 (or 16647 counting only the distinct ones).

The product of its (nonzero) digits is 336, while the sum is 19.

The square root of 130402720 is about 11419.4010350806. The cubic root of 130402720 is about 507.1022646684.

Adding to 130402720 its reverse (27204031), we get a palindrome (157606751).

The spelling of 130402720 in words is "one hundred thirty million, four hundred two thousand, seven hundred twenty".