8272784 has 40 divisors (see below), whose sum is σ = 17832192. Its totient is φ = 3692160.

The previous prime is 8272769. The next prime is 8272787. The reversal of 8272784 is 4872728.

It is a super-2 number, since 2×8272784² = 136877910221312, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (8272787) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5807 + ... + 7089.

Almost surely, 2^8272784 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 8272784, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8916096).

8272784 is an abundant number, since it is smaller than the sum of its proper divisors (9559408).

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

8272784 is a wasteful number, since it uses less digits than its factorization.

8272784 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1335 (or 1329 counting only the distinct ones).

The product of its digits is 50176, while the sum is 38.

The square root of 8272784 is about 2876.2447740066. The cubic root of 8272784 is about 202.2478413963.

The spelling of 8272784 in words is "eight million, two hundred seventy-two thousand, seven hundred eighty-four".