203422806 has 64 divisors (see below), whose sum is σ = 470568960. Its totient is φ = 65067840.

The previous prime is 203422783. The next prime is 203422819. The reversal of 203422806 is 608224302.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a self number, because there is not a number n which added to its sum of digits gives 203422806.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 228895 + ... + 229781.

It is an arithmetic number, because the mean of its divisors is an integer number (7352640).

Almost surely, 2^203422806 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 203422806, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (235284480).

203422806 is an abundant number, since it is smaller than the sum of its proper divisors (267146154).

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

203422806 is a wasteful number, since it uses less digits than its factorization.

203422806 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1066 (or 1060 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 27.

The square root of 203422806 is about 14262.6367127541. The cubic root of 203422806 is about 588.1208102454.

The spelling of 203422806 in words is "two hundred three million, four hundred twenty-two thousand, eight hundred six".