8353440 has 72 divisors (see below), whose sum is σ = 28511028. Its totient is φ = 2227200.

The previous prime is 8353427. The next prime is 8353441. The reversal of 8353440 is 443538.

It is a happy number.

8353440 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 7817616 + 535824 = 2796^2 + 732^2 .

It is a tau number, because it is divible by the number of its divisors (72).

It is not an unprimeable number, because it can be changed into a prime (8353441) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1461 + ... + 4340.

Almost surely, 2^8353440 is an apocalyptic number.

8353440 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

8353440 is an abundant number, since it is smaller than the sum of its proper divisors (20157588).

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

8353440 is a wasteful number, since it uses less digits than its factorization.

8353440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5822 (or 5811 counting only the distinct ones).

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

The square root of 8353440 is about 2890.2318246120. The cubic root of 8353440 is about 202.9029926307.

Adding to 8353440 its reverse (443538), we get a palindrome (8796978).

The spelling of 8353440 in words is "eight million, three hundred fifty-three thousand, four hundred forty".