3240400 has 30 divisors (see below), whose sum is σ = 7786022. Its totient is φ = 1296000.

The previous prime is 3240389. The next prime is 3240407. The reversal of 3240400 is 40423.

It can be written as a sum of positive squares in 3 ways, for example, as 1132096 + 2108304 = 1064^2 + 1452^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3240407) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3651 + ... + 4450.

Almost surely, 2^3240400 is an apocalyptic number.

It is an amenable number.

3240400 is an abundant number, since it is smaller than the sum of its proper divisors (4545622).

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

3240400 is a wasteful number, since it uses less digits than its factorization.

3240400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8119 (or 8108 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 13.

The square root of 3240400 is about 1800.1111076820. Note that the first 4 decimals coincide. The cubic root of 3240400 is about 147.9788136218.

Adding to 3240400 its reverse (40423), we get a palindrome (3280823).

The spelling of 3240400 in words is "three million, two hundred forty thousand, four hundred".