200400004 has 18 divisors (see below), whose sum is σ = 407957550. Its totient is φ = 85885632.

The previous prime is 200399999. The next prime is 200400007. The reversal of 200400004 is 400004002.

It can be written as a sum of positive squares in only one way, i.e., 186322500 + 14077504 = 13650^2 + 3752^2 .

It is not an unprimeable number, because it can be changed into a prime (200400007) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 511029 + ... + 511420.

Almost surely, 2^200400004 is an apocalyptic number.

It is an amenable number.

200400004 is an abundant number, since it is smaller than the sum of its proper divisors (207557546).

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

200400004 is a wasteful number, since it uses less digits than its factorization.

200400004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1022467 (or 1022458 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 10.

The square root of 200400004 is about 14156.2708366293. The cubic root of 200400004 is about 585.1931609436.

Adding to 200400004 its reverse (400004002), we get a palindrome (600404006).

The spelling of 200400004 in words is "two hundred million, four hundred thousand, four".