9998272 has 28 divisors (see below), whose sum is σ = 20528280. Its totient is φ = 4825856.

The previous prime is 9998249. The next prime is 9998273. The reversal of 9998272 is 2728999.

It is a Smith number, since the sum of its digits (46) 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 (9998273) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 838 + ... + 4549.

Almost surely, 2^9998272 is an apocalyptic number.

It is an amenable number.

9998272 is an abundant number, since it is smaller than the sum of its proper divisors (10530008).

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

9998272 is a wasteful number, since it uses less digits than its factorization.

9998272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5428 (or 5418 counting only the distinct ones).

The product of its digits is 163296, while the sum is 46.

The square root of 9998272 is about 3162.0044275744. The cubic root of 9998272 is about 215.4310587445.

The spelling of 9998272 in words is "nine million, nine hundred ninety-eight thousand, two hundred seventy-two".