130064720 has 20 divisors (see below), whose sum is σ = 302400660. Its totient is φ = 52025856.

The previous prime is 130064717. The next prime is 130064741. The reversal of 130064720 is 27460031.

It can be written as a sum of positive squares in 2 ways, for example, as 76247824 + 53816896 = 8732^2 + 7336^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 812825 + ... + 812984.

It is an arithmetic number, because the mean of its divisors is an integer number (15120033).

Almost surely, 2^130064720 is an apocalyptic number.

130064720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

130064720 is an abundant number, since it is smaller than the sum of its proper divisors (172335940).

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

130064720 is a wasteful number, since it uses less digits than its factorization.

130064720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1625822 (or 1625816 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 23.

The square root of 130064720 is about 11404.5920575880. The cubic root of 130064720 is about 506.6637542153.

The spelling of 130064720 in words is "one hundred thirty million, sixty-four thousand, seven hundred twenty".