442531632 has 20 divisors (see below), whose sum is σ = 1143206840. Its totient is φ = 147510528.

The previous prime is 442531613. The next prime is 442531667. The reversal of 442531632 is 236135244.

It is a self number, because there is not a number n which added to its sum of digits gives 442531632.

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, 4609657 + ... + 4609752.

It is an arithmetic number, because the mean of its divisors is an integer number (57160342).

Almost surely, 2^442531632 is an apocalyptic number.

It is an amenable number.

442531632 is an abundant number, since it is smaller than the sum of its proper divisors (700675208).

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

442531632 is a wasteful number, since it uses less digits than its factorization.

442531632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9219420 (or 9219414 counting only the distinct ones).

The product of its digits is 17280, while the sum is 30.

The square root of 442531632 is about 21036.4358197866. The cubic root of 442531632 is about 762.0464421512.

Adding to 442531632 its reverse (236135244), we get a palindrome (678666876).

The spelling of 442531632 in words is "four hundred forty-two million, five hundred thirty-one thousand, six hundred thirty-two".