9565720420 has 12 divisors (see below), whose sum is σ = 20088012924. Its totient is φ = 3826288160.

The previous prime is 9565720393. The next prime is 9565720433. The reversal of 9565720420 is 240275659.

It can be written as a sum of positive squares in 2 ways, for example, as 4203966244 + 5361754176 = 64838^2 + 73224^2 .

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, 239142991 + ... + 239143030.

It is an arithmetic number, because the mean of its divisors is an integer number (1674001077).

Almost surely, 2^9565720420 is an apocalyptic number.

It is an amenable number.

9565720420 is an abundant number, since it is smaller than the sum of its proper divisors (10522292504).

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

9565720420 is a wasteful number, since it uses less digits than its factorization.

9565720420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 478286030 (or 478286028 counting only the distinct ones).

The product of its (nonzero) digits is 151200, while the sum is 40.

The square root of 9565720420 is about 97804.5010211698. The cubic root of 9565720420 is about 2122.7844346185.

The spelling of 9565720420 in words is "nine billion, five hundred sixty-five million, seven hundred twenty thousand, four hundred twenty".