7720487130 has 32 divisors (see below), whose sum is σ = 18623240064. Its totient is φ = 2048344256.

The previous prime is 7720487129. The next prime is 7720487153. The reversal of 7720487130 is 317840277.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 647262 + ... + 659081.

It is an arithmetic number, because the mean of its divisors is an integer number (581976252).

Almost surely, 2^7720487130 is an apocalyptic number.

7720487130 is an abundant number, since it is smaller than the sum of its proper divisors (10902752934).

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

7720487130 is a wasteful number, since it uses less digits than its factorization.

7720487130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1306550.

The product of its (nonzero) digits is 65856, while the sum is 39.

The square root of 7720487130 is about 87866.3025852346. The cubic root of 7720487130 is about 1976.4305934716.

The spelling of 7720487130 in words is "seven billion, seven hundred twenty million, four hundred eighty-seven thousand, one hundred thirty".