9928772 has 36 divisors (see below), whose sum is σ = 20396880. Its totient is φ = 4216464.

The previous prime is 9928747. The next prime is 9928783. The reversal of 9928772 is 2778299.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 34943 + ... + 35225.

It is an arithmetic number, because the mean of its divisors is an integer number (566580).

Almost surely, 2^9928772 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9928772, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10198440).

9928772 is an abundant number, since it is smaller than the sum of its proper divisors (10468108).

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

9928772 is a wasteful number, since it uses less digits than its factorization.

9928772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 480 (or 471 counting only the distinct ones).

The product of its digits is 127008, while the sum is 44.

The square root of 9928772 is about 3150.9953982829. The cubic root of 9928772 is about 214.9307294419.

The spelling of 9928772 in words is "nine million, nine hundred twenty-eight thousand, seven hundred seventy-two".