442636460 has 24 divisors (see below), whose sum is σ = 1062327840. Its totient is φ = 151761024.

The previous prime is 442636457. The next prime is 442636471. The reversal of 442636460 is 64636244.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a self number, because there is not a number n which added to its sum of digits gives 442636460.

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, 1580705 + ... + 1580984.

It is an arithmetic number, because the mean of its divisors is an integer number (44263660).

Almost surely, 2^442636460 is an apocalyptic number.

It is an amenable number.

442636460 is an abundant number, since it is smaller than the sum of its proper divisors (619691380).

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

442636460 is a wasteful number, since it uses less digits than its factorization.

442636460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3161705 (or 3161703 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 35.

The square root of 442636460 is about 21038.9272540213. The cubic root of 442636460 is about 762.1066092231.

The spelling of 442636460 in words is "four hundred forty-two million, six hundred thirty-six thousand, four hundred sixty".