442343322 has 64 divisors (see below), whose sum is σ = 1040688000. Its totient is φ = 139031424.

The previous prime is 442343299. The next prime is 442343339. The reversal of 442343322 is 223343244.

It is a super-2 number, since 2×442343322² = 391335229035991368, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 64054 + ... + 70622.

It is an arithmetic number, because the mean of its divisors is an integer number (16260750).

Almost surely, 2^442343322 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 442343322, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (520344000).

442343322 is an abundant number, since it is smaller than the sum of its proper divisors (598344678).

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

442343322 is a wasteful number, since it uses less digits than its factorization.

442343322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6652 (or 6646 counting only the distinct ones).

The product of its digits is 13824, while the sum is 27.

The square root of 442343322 is about 21031.9595378082. The cubic root of 442343322 is about 761.9383358867.

Adding to 442343322 its reverse (223343244), we get a palindrome (665686566).

The spelling of 442343322 in words is "four hundred forty-two million, three hundred forty-three thousand, three hundred twenty-two".