200421444 has 24 divisors (see below), whose sum is σ = 467879328. Its totient is φ = 66774400.

The previous prime is 200421439. The next prime is 200421491. The reversal of 200421444 is 444124002.

It is a self number, because there is not a number n which added to its sum of digits gives 200421444.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44044 + ... + 48380.

It is an arithmetic number, because the mean of its divisors is an integer number (19494972).

Almost surely, 2^200421444 is an apocalyptic number.

It is an amenable number.

200421444 is an abundant number, since it is smaller than the sum of its proper divisors (267457884).

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

200421444 is a wasteful number, since it uses less digits than its factorization.

200421444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8195 (or 8193 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 21.

The square root of 200421444 is about 14157.0280779548. The cubic root of 200421444 is about 585.2140293629.

Adding to 200421444 its reverse (444124002), we get a palindrome (644545446).

The spelling of 200421444 in words is "two hundred million, four hundred twenty-one thousand, four hundred forty-four".