442526220 has 48 divisors (see below), whose sum is σ = 1376749920. Its totient is φ = 118006848.

The previous prime is 442526191. The next prime is 442526221. The reversal of 442526220 is 22625244.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (442526221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 409207 + ... + 410286.

It is an arithmetic number, because the mean of its divisors is an integer number (28682290).

Almost surely, 2^442526220 is an apocalyptic number.

It is an amenable number.

442526220 is an abundant number, since it is smaller than the sum of its proper divisors (934223700).

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

442526220 is a wasteful number, since it uses less digits than its factorization.

442526220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 819511 (or 819503 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 27.

The square root of 442526220 is about 21036.3071854354. The cubic root of 442526220 is about 762.0433356221.

The spelling of 442526220 in words is "four hundred forty-two million, five hundred twenty-six thousand, two hundred twenty".