9728862738 has 32 divisors (see below), whose sum is σ = 22466661504. Its totient is φ = 2751017472.

The previous prime is 9728862727. The next prime is 9728862739. The reversal of 9728862738 is 8372688279.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (9728862739) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1189945 + ... + 1198092.

It is an arithmetic number, because the mean of its divisors is an integer number (702083172).

Almost surely, 2^9728862738 is an apocalyptic number.

9728862738 is an abundant number, since it is smaller than the sum of its proper divisors (12737798766).

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

9728862738 is a wasteful number, since it uses less digits than its factorization.

9728862738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2388146.

The product of its digits is 16257024, while the sum is 60.

The square root of 9728862738 is about 98634.9975313022. The cubic root of 9728862738 is about 2134.7844237870.

The spelling of 9728862738 in words is "nine billion, seven hundred twenty-eight million, eight hundred sixty-two thousand, seven hundred thirty-eight".