3222740 has 12 divisors (see below), whose sum is σ = 6767796. Its totient is φ = 1289088.

The previous prime is 3222727. The next prime is 3222763. The reversal of 3222740 is 472223.

3222740 = T₆₄₈ + T₆₄₉ + ... + T₆₆₂.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 2274064 + 948676 = 1508^2 + 974^2 .

It is a Harshad number since it is a multiple of its sum of digits (20), and also a Moran number because the ratio is a prime number: 161137 = 3222740 / (3 + 2 + 2 + 2 + 7 + 4 + 0).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 80549 + ... + 80588.

It is an arithmetic number, because the mean of its divisors is an integer number (563983).

Almost surely, 2^3222740 is an apocalyptic number.

It is an amenable number.

3222740 is an abundant number, since it is smaller than the sum of its proper divisors (3545056).

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

3222740 is a wasteful number, since it uses less digits than its factorization.

3222740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161146 (or 161144 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 20.

The square root of 3222740 is about 1795.1991532975. The cubic root of 3222740 is about 147.7094983384.

Adding to 3222740 its reverse (472223), we get a palindrome (3694963).

The spelling of 3222740 in words is "three million, two hundred twenty-two thousand, seven hundred forty".