442304220 has 48 divisors (see below), whose sum is σ = 1239396480. Its totient is φ = 117857856.

The previous prime is 442304209. The next prime is 442304257. The reversal of 442304220 is 22403244.

It is a super-3 number, since 3×442304220³ (a number of 27 digits) contains 333 as substring.

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, 123211 + ... + 126749.

It is an arithmetic number, because the mean of its divisors is an integer number (25820760).

Almost surely, 2^442304220 is an apocalyptic number.

It is an amenable number.

442304220 is an abundant number, since it is smaller than the sum of its proper divisors (797092260).

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

442304220 is a wasteful number, since it uses less digits than its factorization.

442304220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5634 (or 5632 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 21.

The square root of 442304220 is about 21031.0299319838. The cubic root of 442304220 is about 761.9158841023.

Adding to 442304220 its reverse (22403244), we get a palindrome (464707464).

The spelling of 442304220 in words is "four hundred forty-two million, three hundred four thousand, two hundred twenty".