442764648 has 48 divisors (see below), whose sum is σ = 1211535780. Its totient is φ = 146064384.

The previous prime is 442764601. The next prime is 442764653. The reversal of 442764648 is 846467244.

It can be written as a sum of positive squares in 2 ways, for example, as 439237764 + 3526884 = 20958^2 + 1878^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 24715 + ... + 38682.

Almost surely, 2^442764648 is an apocalyptic number.

It is an amenable number.

442764648 is an abundant number, since it is smaller than the sum of its proper divisors (768771132).

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

442764648 is a wasteful number, since it uses less digits than its factorization.

442764648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63506 (or 63499 counting only the distinct ones).

The product of its digits is 1032192, while the sum is 45.

The square root of 442764648 is about 21041.9734815915. The cubic root of 442764648 is about 762.1801710898.

The spelling of 442764648 in words is "four hundred forty-two million, seven hundred sixty-four thousand, six hundred forty-eight".