200400012 has 108 divisors (see below), whose sum is σ = 561604680. Its totient is φ = 60039936.

The previous prime is 200400007. The next prime is 200400017. The reversal of 200400012 is 210004002.

It is an interprime number because it is at equal distance from previous prime (200400007) and next prime (200400017).

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 200399967 and 200400003.

It is not an unprimeable number, because it can be changed into a prime (200400017) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 323439 + ... + 324057.

Almost surely, 2^200400012 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 200400012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (280802340).

200400012 is an abundant number, since it is smaller than the sum of its proper divisors (361204668).

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

200400012 is a wasteful number, since it uses less digits than its factorization.

200400012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 692 (or 664 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 9.

The square root of 200400012 is about 14156.2711191895. The cubic root of 200400012 is about 585.1931687306.

Adding to 200400012 its reverse (210004002), we get a palindrome (410404014).

The spelling of 200400012 in words is "two hundred million, four hundred thousand, twelve".