7720130 has 16 divisors (see below), whose sum is σ = 15159744. Its totient is φ = 2807280.

The previous prime is 7720123. The next prime is 7720151. The reversal of 7720130 is 310277.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34982 + ... + 35201.

It is an arithmetic number, because the mean of its divisors is an integer number (947484).

Almost surely, 2^7720130 is an apocalyptic number.

7720130 is a deficient number, since it is larger than the sum of its proper divisors (7439614).

7720130 is a wasteful number, since it uses less digits than its factorization.

7720130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70201.

The product of its (nonzero) digits is 294, while the sum is 20.

The square root of 7720130 is about 2778.5121918034. The cubic root of 7720130 is about 197.6400118126.

The spelling of 7720130 in words is "seven million, seven hundred twenty thousand, one hundred thirty".