203028040 has 32 divisors (see below), whose sum is σ = 458730360. Its totient is φ = 80870400.

The previous prime is 203028031. The next prime is 203028143. The reversal of 203028040 is 40820302.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 202948516 + 79524 = 14246^2 + 282^2 .

It is a junction number, because it is equal to n+sod(n) for n = 203027999 and 203028017.

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 7 ways as a sum of consecutive naturals, for example, 891 + ... + 20170.

Almost surely, 2^203028040 is an apocalyptic number.

203028040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

203028040 is an abundant number, since it is smaller than the sum of its proper divisors (255702320).

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

203028040 is a wasteful number, since it uses less digits than its factorization.

203028040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21313 (or 21309 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 203028040 is about 14248.7908258912. The cubic root of 203028040 is about 587.7401245675.

Adding to 203028040 its reverse (40820302), we get a palindrome (243848342).

The spelling of 203028040 in words is "two hundred three million, twenty-eight thousand, forty".