3221040 has 40 divisors (see below), whose sum is σ = 9985968. Its totient is φ = 858880.

The previous prime is 3221033. The next prime is 3221063. The reversal of 3221040 is 401223.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (12).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6471 + ... + 6950.

Almost surely, 2^3221040 is an apocalyptic number.

3221040 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

3221040 is an abundant number, since it is smaller than the sum of its proper divisors (6764928).

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

3221040 is a wasteful number, since it uses less digits than its factorization.

3221040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13437 (or 13431 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 12.

The square root of 3221040 is about 1794.7256057682. The cubic root of 3221040 is about 147.6835214458.

Adding to 3221040 its reverse (401223), we get a palindrome (3622263).

The spelling of 3221040 in words is "three million, two hundred twenty-one thousand, forty".