9642720810 has 32 divisors (see below), whose sum is σ = 23889065472. Its totient is φ = 2488443840.

The previous prime is 9642720809. The next prime is 9642720839. The reversal of 9642720810 is 180272469.

It is a super-2 number, since 2×9642720810² (a number of 21 digits) contains 22 as substring.

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, 5183329 + ... + 5185188.

It is an arithmetic number, because the mean of its divisors is an integer number (746533296).

Almost surely, 2^9642720810 is an apocalyptic number.

9642720810 is an abundant number, since it is smaller than the sum of its proper divisors (14246344662).

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

9642720810 is a wasteful number, since it uses less digits than its factorization.

9642720810 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10368558.

The product of its (nonzero) digits is 48384, while the sum is 39.

The square root of 9642720810 is about 98197.3564308123. The cubic root of 9642720810 is about 2128.4650869569.

The spelling of 9642720810 in words is "nine billion, six hundred forty-two million, seven hundred twenty thousand, eight hundred ten".