442755816 has 64 divisors (see below), whose sum is σ = 1126137600. Its totient is φ = 145037568.

The previous prime is 442755811. The next prime is 442755823. The reversal of 442755816 is 618557244.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (442755811) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 555130 + ... + 555926.

It is an arithmetic number, because the mean of its divisors is an integer number (17595900).

Almost surely, 2^442755816 is an apocalyptic number.

It is an amenable number.

442755816 is an abundant number, since it is smaller than the sum of its proper divisors (683381784).

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

442755816 is a wasteful number, since it uses less digits than its factorization.

442755816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1178 (or 1174 counting only the distinct ones).

The product of its digits is 268800, while the sum is 42.

The square root of 442755816 is about 21041.7636142981. The cubic root of 442755816 is about 762.1751032206.

The spelling of 442755816 in words is "four hundred forty-two million, seven hundred fifty-five thousand, eight hundred sixteen".