200115400 has 24 divisors (see below), whose sum is σ = 465268770. Its totient is φ = 80046080.

The previous prime is 200115371. The next prime is 200115401. The reversal of 200115400 is 4511002.

200115400 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 185014404 + 15100996 = 13602^2 + 3886^2 .

It is not an unprimeable number, because it can be changed into a prime (200115401) 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, 500089 + ... + 500488.

Almost surely, 2^200115400 is an apocalyptic number.

200115400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

200115400 is an abundant number, since it is smaller than the sum of its proper divisors (265153370).

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

200115400 is a wasteful number, since it uses less digits than its factorization.

200115400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1000593 (or 1000584 counting only the distinct ones).

The product of its (nonzero) digits is 40, while the sum is 13.

The square root of 200115400 is about 14146.2150414872. The cubic root of 200115400 is about 584.9160032321.

Adding to 200115400 its reverse (4511002), we get a palindrome (204626402).

It can be divided in two parts, 200 and 115400, that added together give a square (115600 = 340²).

The spelling of 200115400 in words is "two hundred million, one hundred fifteen thousand, four hundred".