442870308 has 24 divisors (see below), whose sum is σ = 1148182560. Its totient is φ = 147623400.

The previous prime is 442870303. The next prime is 442870327. The reversal of 442870308 is 803078244.

It is a super-2 number, since 2×442870308² = 392268219416029728, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (442870301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2050218 + ... + 2050433.

It is an arithmetic number, because the mean of its divisors is an integer number (47840940).

Almost surely, 2^442870308 is an apocalyptic number.

It is an amenable number.

442870308 is an abundant number, since it is smaller than the sum of its proper divisors (705312252).

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

442870308 is a wasteful number, since it uses less digits than its factorization.

442870308 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4100664 (or 4100656 counting only the distinct ones).

The product of its (nonzero) digits is 43008, while the sum is 36.

The square root of 442870308 is about 21044.4840278872. The cubic root of 442870308 is about 762.2407943819.

The spelling of 442870308 in words is "four hundred forty-two million, eight hundred seventy thousand, three hundred eight".