200778426 has 40 divisors (see below), whose sum is σ = 465416820. Its totient is φ = 64616832.

The previous prime is 200778419. The next prime is 200778427. The reversal of 200778426 is 624877002.

200778426 is digitally balanced in base 3, 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 2 ways, for example, as 197374401 + 3404025 = 14049^2 + 1845^2 .

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (200778427) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 16671 + ... + 26066.

Almost surely, 2^200778426 is an apocalyptic number.

200778426 is an abundant number, since it is smaller than the sum of its proper divisors (264638394).

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

200778426 is a wasteful number, since it uses less digits than its factorization.

200778426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42780 (or 42771 counting only the distinct ones).

The product of its (nonzero) digits is 37632, while the sum is 36.

The square root of 200778426 is about 14169.6304115527. The cubic root of 200778426 is about 585.5612759095.

The spelling of 200778426 in words is "two hundred million, seven hundred seventy-eight thousand, four hundred twenty-six".