9928765560 has 128 divisors (see below), whose sum is σ = 35139686400. Its totient is φ = 2196218880.

The previous prime is 9928765543. The next prime is 9928765573. The reversal of 9928765560 is 655678299.

It is a super-2 number, since 2×9928765560² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 9928765560.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 164605 + ... + 216684.

It is an arithmetic number, because the mean of its divisors is an integer number (274528800).

Almost surely, 2^9928765560 is an apocalyptic number.

It is an amenable number.

9928765560 is an abundant number, since it is smaller than the sum of its proper divisors (25210920840).

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

9928765560 is a wasteful number, since it uses less digits than its factorization.

9928765560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 381341 (or 381337 counting only the distinct ones).

The product of its (nonzero) digits is 8164800, while the sum is 57.

The square root of 9928765560 is about 99643.1912375351. The cubic root of 9928765560 is about 2149.3068297245.

The spelling of 9928765560 in words is "nine billion, nine hundred twenty-eight million, seven hundred sixty-five thousand, five hundred sixty".