200644424 has 8 divisors (see below), whose sum is σ = 376208310. Its totient is φ = 100322208.

The previous prime is 200644393. The next prime is 200644429. The reversal of 200644424 is 424446002.

It can be written as a sum of positive squares in only one way, i.e., 188183524 + 12460900 = 13718^2 + 3530^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 200644393 and 200644402.

It is not an unprimeable number, because it can be changed into a prime (200644429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12540269 + ... + 12540284.

Almost surely, 2^200644424 is an apocalyptic number.

It is an amenable number.

200644424 is a deficient number, since it is larger than the sum of its proper divisors (175563886).

200644424 is a wasteful number, since it uses less digits than its factorization.

200644424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25080559 (or 25080555 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 26.

The square root of 200644424 is about 14164.9011291996. The cubic root of 200644424 is about 585.4309766428.

The spelling of 200644424 in words is "two hundred million, six hundred forty-four thousand, four hundred twenty-four".