130100720 has 20 divisors (see below), whose sum is σ = 302484360. Its totient is φ = 52040256.

The previous prime is 130100689. The next prime is 130100731. The reversal of 130100720 is 27001031.

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

It is a junction number, because it is equal to n+sod(n) for n = 130100695 and 130100704.

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, 813050 + ... + 813209.

It is an arithmetic number, because the mean of its divisors is an integer number (15124218).

Almost surely, 2^130100720 is an apocalyptic number.

130100720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

130100720 is an abundant number, since it is smaller than the sum of its proper divisors (172383640).

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

130100720 is a wasteful number, since it uses less digits than its factorization.

130100720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1626272 (or 1626266 counting only the distinct ones).

The product of its (nonzero) digits is 42, while the sum is 14.

The square root of 130100720 is about 11406.1702599952. The cubic root of 130100720 is about 506.7104955929.

Adding to 130100720 its reverse (27001031), we get a palindrome (157101751).

The spelling of 130100720 in words is "one hundred thirty million, one hundred thousand, seven hundred twenty".