130720715 has 4 divisors (see below), whose sum is σ = 156864864. Its totient is φ = 104576568.

The previous prime is 130720697. The next prime is 130720763. The reversal of 130720715 is 517027031.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 130720715 - 2⁶ = 130720651 is a prime.

It is a super-2 number, since 2×130720715² = 34175810660222450, which contains 22 as substring.

It is a Duffinian 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, 13072067 + ... + 13072076.

It is an arithmetic number, because the mean of its divisors is an integer number (39216216).

Almost surely, 2^130720715 is an apocalyptic number.

130720715 is a deficient number, since it is larger than the sum of its proper divisors (26144149).

130720715 is an equidigital number, since it uses as much as digits as its factorization.

130720715 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26144148.

The product of its (nonzero) digits is 1470, while the sum is 26.

The square root of 130720715 is about 11433.3160106769. The cubic root of 130720715 is about 507.5141300150.

Adding to 130720715 its reverse (517027031), we get a palindrome (647747746).

It can be divided in two parts, 1307 and 20715, that added together give a palindrome (22022).

The spelling of 130720715 in words is "one hundred thirty million, seven hundred twenty thousand, seven hundred fifteen".