442897220 has 48 divisors (see below), whose sum is σ = 980864640. Its totient is φ = 167521536.

The previous prime is 442897199. The next prime is 442897237. The reversal of 442897220 is 22798244.

It is a Harshad number since it is a multiple of its sum of digits (38).

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, 361529 + ... + 362751.

It is an arithmetic number, because the mean of its divisors is an integer number (20434680).

Almost surely, 2^442897220 is an apocalyptic number.

It is an amenable number.

442897220 is an abundant number, since it is smaller than the sum of its proper divisors (537967420).

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

442897220 is a wasteful number, since it uses less digits than its factorization.

442897220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2204 (or 2202 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 38.

The square root of 442897220 is about 21045.1234256300. The cubic root of 442897220 is about 762.2562338220.

The spelling of 442897220 in words is "four hundred forty-two million, eight hundred ninety-seven thousand, two hundred twenty".