442744040728 has 64 divisors (see below), whose sum is σ = 917553031200. Its totient is φ = 198609223680.

The previous prime is 442744040701. The next prime is 442744040741. The reversal of 442744040728 is 827040447244.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2221408 + ... + 2412496.

Almost surely, 2^442744040728 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 442744040728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (458776515600).

442744040728 is an abundant number, since it is smaller than the sum of its proper divisors (474808990472).

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

442744040728 is a wasteful number, since it uses less digits than its factorization.

442744040728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 191452 (or 191448 counting only the distinct ones).

The product of its (nonzero) digits is 1605632, while the sum is 46.

The spelling of 442744040728 in words is "four hundred forty-two billion, seven hundred forty-four million, forty thousand, seven hundred twenty-eight".