9928280 has 32 divisors (see below), whose sum is σ = 22818240. Its totient is φ = 3886080.

The previous prime is 9928267. The next prime is 9928283. The reversal of 9928280 is 828299.

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9928283) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 761 + ... + 4520.

It is an arithmetic number, because the mean of its divisors is an integer number (713070).

Almost surely, 2^9928280 is an apocalyptic number.

It is an amenable number.

9928280 is an abundant number, since it is smaller than the sum of its proper divisors (12889960).

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

9928280 is a wasteful number, since it uses less digits than its factorization.

9928280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5339 (or 5335 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 38.

The square root of 9928280 is about 3150.9173267479. The cubic root of 9928280 is about 214.9271792323.

The spelling of 9928280 in words is "nine million, nine hundred twenty-eight thousand, two hundred eighty".