203055030 has 96 divisors (see below), whose sum is σ = 548570880. Its totient is φ = 52073280.

The previous prime is 203055007. The next prime is 203055037. The reversal of 203055030 is 30550302.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 203054994 and 203055012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (203055037) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 274401 + ... + 275139.

It is an arithmetic number, because the mean of its divisors is an integer number (5714280).

Almost surely, 2^203055030 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 203055030, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (274285440).

203055030 is an abundant number, since it is smaller than the sum of its proper divisors (345515850).

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

203055030 is a wasteful number, since it uses less digits than its factorization.

203055030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 866 (or 863 counting only the distinct ones).

The product of its (nonzero) digits is 450, while the sum is 18.

The square root of 203055030 is about 14249.7378923263. The cubic root of 203055030 is about 587.7661676091.

The spelling of 203055030 in words is "two hundred three million, fifty-five thousand, thirty".