442857730 has 32 divisors (see below), whose sum is σ = 920056320. Its totient is φ = 150331200.

The previous prime is 442857713. The next prime is 442857749. The reversal of 442857730 is 37758244.

It is a super-2 number, since 2×442857730² = 392245938041505800, which contains 22 as substring.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 24250 + ... + 38389.

It is an arithmetic number, because the mean of its divisors is an integer number (28751760).

Almost surely, 2^442857730 is an apocalyptic number.

442857730 is an abundant number, since it is smaller than the sum of its proper divisors (477198590).

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

442857730 is a wasteful number, since it uses less digits than its factorization.

442857730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62754.

The product of its (nonzero) digits is 188160, while the sum is 40.

The square root of 442857730 is about 21044.1851826104. The cubic root of 442857730 is about 762.2335781569.

The spelling of 442857730 in words is "four hundred forty-two million, eight hundred fifty-seven thousand, seven hundred thirty".