3221436 has 24 divisors (see below), whose sum is σ = 7776720. Its totient is φ = 1036672.

The previous prime is 3221429. The next prime is 3221437. The reversal of 3221436 is 6341223.

3221436 = 175² + 176² + ... + 246².

It is a happy number.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3221437) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4281 + ... + 4976.

It is an arithmetic number, because the mean of its divisors is an integer number (324030).

Almost surely, 2^3221436 is an apocalyptic number.

It is an amenable number.

3221436 is an abundant number, since it is smaller than the sum of its proper divisors (4555284).

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

3221436 is a wasteful number, since it uses less digits than its factorization.

3221436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9293 (or 9291 counting only the distinct ones).

The product of its digits is 864, while the sum is 21.

The square root of 3221436 is about 1794.8359256489. The cubic root of 3221436 is about 147.6895733502.

Adding to 3221436 its reverse (6341223), we get a palindrome (9562659).

The spelling of 3221436 in words is "three million, two hundred twenty-one thousand, four hundred thirty-six".