203425400 has 192 divisors, whose sum is σ = 546393600. Its totient is φ = 69949440.

The previous prime is 203425367. The next prime is 203425421. The reversal of 203425400 is 4524302.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3036167 + ... + 3036233.

It is an arithmetic number, because the mean of its divisors is an integer number (2845800).

Almost surely, 2^203425400 is an apocalyptic number.

203425400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 203425400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (273196800).

203425400 is an abundant number, since it is smaller than the sum of its proper divisors (342968200).

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

203425400 is a wasteful number, since it uses less digits than its factorization.

203425400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166 (or 157 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 20.

The square root of 203425400 is about 14262.7276493664. The cubic root of 203425400 is about 588.1233100944.

Adding to 203425400 its reverse (4524302), we get a palindrome (207949702).

The spelling of 203425400 in words is "two hundred three million, four hundred twenty-five thousand, four hundred".