650043400 has 48 divisors (see below), whose sum is σ = 1519785540. Its totient is φ = 258566400.

The previous prime is 650043367. The next prime is 650043413. The reversal of 650043400 is 4340056.

It can be written as a sum of positive squares in 6 ways, for example, as 262504804 + 387538596 = 16202^2 + 19686^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 27222 + ... + 45178.

Almost surely, 2^650043400 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 650043400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (759892770).

650043400 is an abundant number, since it is smaller than the sum of its proper divisors (869742140).

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

650043400 is a wasteful number, since it uses less digits than its factorization.

650043400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18154 (or 18145 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 22.

The square root of 650043400 is about 25495.9486977833. The cubic root of 650043400 is about 866.2583842847.

Adding to 650043400 its reverse (4340056), we get a palindrome (654383456).

The spelling of 650043400 in words is "six hundred fifty million, forty-three thousand, four hundred".