200644040 has 32 divisors (see below), whose sum is σ = 467019000. Its totient is φ = 77489664.

The previous prime is 200644001. The next prime is 200644051. The reversal of 200644040 is 40446002.

It can be written as a sum of positive squares in 4 ways, for example, as 101163364 + 99480676 = 10058^2 + 9974^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

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, 85325 + ... + 87644.

Almost surely, 2^200644040 is an apocalyptic number.

200644040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

200644040 is an abundant number, since it is smaller than the sum of its proper divisors (266374960).

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

200644040 is a wasteful number, since it uses less digits than its factorization.

200644040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 173009 (or 173005 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 200644040 is about 14164.8875745627. The cubic root of 200644040 is about 585.4306031701.

The spelling of 200644040 in words is "two hundred million, six hundred forty-four thousand, forty".