442631332 has 24 divisors (see below), whose sum is σ = 910026432. Its totient is φ = 185719200.

The previous prime is 442631323. The next prime is 442631351. The reversal of 442631332 is 233136244.

It is a self number, because there is not a number n which added to its sum of digits gives 442631332.

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, 386344 + ... + 387487.

It is an arithmetic number, because the mean of its divisors is an integer number (37917768).

Almost surely, 2^442631332 is an apocalyptic number.

It is an amenable number.

442631332 is an abundant number, since it is smaller than the sum of its proper divisors (467395100).

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

442631332 is a wasteful number, since it uses less digits than its factorization.

442631332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 773859 (or 773857 counting only the distinct ones).

The product of its digits is 10368, while the sum is 28.

The square root of 442631332 is about 21038.8053843368. The cubic root of 442631332 is about 762.1036661775.

Adding to 442631332 its reverse (233136244), we get a palindrome (675767576).

The spelling of 442631332 in words is "four hundred forty-two million, six hundred thirty-one thousand, three hundred thirty-two".