203389420 has 24 divisors (see below), whose sum is σ = 459973584. Its totient is φ = 75097536.

The previous prime is 203389409. The next prime is 203389423. The reversal of 203389420 is 24983302.

It is not an unprimeable number, because it can be changed into a prime (203389423) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 390874 + ... + 391393.

It is an arithmetic number, because the mean of its divisors is an integer number (19165566).

Almost surely, 2^203389420 is an apocalyptic number.

203389420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

203389420 is an abundant number, since it is smaller than the sum of its proper divisors (256584164).

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

203389420 is a wasteful number, since it uses less digits than its factorization.

203389420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 782289 (or 782287 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 31.

The square root of 203389420 is about 14261.4662640277. The cubic root of 203389420 is about 588.0886341159.

The spelling of 203389420 in words is "two hundred three million, three hundred eighty-nine thousand, four hundred twenty".