322143444 has 216 divisors, whose sum is σ = 1007854848. Its totient is φ = 86365440.

The previous prime is 322143443. The next prime is 322143463. The reversal of 322143444 is 444341223.

It is a happy number.

322143444 is a `hidden beast` number, since 3 + 2 + 214 + 3 + 444 = 666.

It is a super-2 number, since 2×322143444² = 207552797024362272, which contains 22 as substring.

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 (322143443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 2351344 + ... + 2351480.

Almost surely, 2^322143444 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 322143444, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (503927424).

322143444 is an abundant number, since it is smaller than the sum of its proper divisors (685711404).

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

322143444 is a wasteful number, since it uses less digits than its factorization.

322143444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 235 (or 223 counting only the distinct ones).

The product of its digits is 9216, while the sum is 27.

The square root of 322143444 is about 17948.3549106875. The cubic root of 322143444 is about 685.5141638483.

Adding to 322143444 its reverse (444341223), we get a palindrome (766484667).

It can be divided in two parts, 3221 and 43444, that added together give a triangular number (46665 = T₃₀₅).

The spelling of 322143444 in words is "three hundred twenty-two million, one hundred forty-three thousand, four hundred forty-four".