8428272 has 40 divisors (see below), whose sum is σ = 22190544. Its totient is φ = 2755584.

The previous prime is 8428237. The next prime is 8428289. The reversal of 8428272 is 2728248.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 888 + ... + 4200.

Almost surely, 2^8428272 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 8428272, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11095272).

8428272 is an abundant number, since it is smaller than the sum of its proper divisors (13762272).

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

8428272 is a wasteful number, since it uses less digits than its factorization.

8428272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3377 (or 3371 counting only the distinct ones).

The product of its digits is 14336, while the sum is 33.

The square root of 8428272 is about 2903.1486355335. The cubic root of 8428272 is about 203.5070759613.

The spelling of 8428272 in words is "eight million, four hundred twenty-eight thousand, two hundred seventy-two".