203428120 has 64 divisors (see below), whose sum is σ = 553884480. Its totient is φ = 65642496.

The previous prime is 203428111. The next prime is 203428129. The reversal of 203428120 is 21824302.

It is an interprime number because it is at equal distance from previous prime (203428111) and next prime (203428129).

It is a junction number, because it is equal to n+sod(n) for n = 203428091 and 203428100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (203428129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16609 + ... + 26128.

It is an arithmetic number, because the mean of its divisors is an integer number (8654445).

Almost surely, 2^203428120 is an apocalyptic number.

203428120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

203428120 is an abundant number, since it is smaller than the sum of its proper divisors (350456360).

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

203428120 is a wasteful number, since it uses less digits than its factorization.

203428120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42772 (or 42768 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 22.

The square root of 203428120 is about 14262.8230024775. The cubic root of 203428120 is about 588.1259313473.

The spelling of 203428120 in words is "two hundred three million, four hundred twenty-eight thousand, one hundred twenty".