8533440 has 84 divisors (see below), whose sum is σ = 29361384. Its totient is φ = 2274816.

The previous prime is 8533433. The next prime is 8533457. The reversal of 8533440 is 443358.

It is a happy number.

8533440 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

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, 1399 + ... + 4361.

Almost surely, 2^8533440 is an apocalyptic number.

8533440 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8533440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14680692).

8533440 is an abundant number, since it is smaller than the sum of its proper divisors (20827944).

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

8533440 is a wasteful number, since it uses less digits than its factorization.

8533440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2986 (or 2973 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

The square root of 8533440 is about 2921.2052307224. The cubic root of 8533440 is about 204.3500334230.

Adding to 8533440 its reverse (443358), we get a palindrome (8976798).

The spelling of 8533440 in words is "eight million, five hundred thirty-three thousand, four hundred forty".