442631604 has 24 divisors (see below), whose sum is σ = 1038163840. Its totient is φ = 146778624.

The previous prime is 442631603. The next prime is 442631633. The reversal of 442631604 is 406136244.

It is a super-2 number, since 2×442631604² = 391845473719225632, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (442631603) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 93244 + ... + 97875.

Almost surely, 2^442631604 is an apocalyptic number.

It is an amenable number.

442631604 is an abundant number, since it is smaller than the sum of its proper divisors (595532236).

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

442631604 is a wasteful number, since it uses less digits than its factorization.

442631604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 191319 (or 191317 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 30.

The square root of 442631604 is about 21038.8118485812. The cubic root of 442631604 is about 762.1038222835.

Adding to 442631604 its reverse (406136244), we get a palindrome (848767848).

The spelling of 442631604 in words is "four hundred forty-two million, six hundred thirty-one thousand, six hundred four".