1603428 has 24 divisors (see below), whose sum is σ = 3833760. Its totient is φ = 521280.

The previous prime is 1603421. The next prime is 1603453. The reversal of 1603428 is 8243061.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1603398 and 1603407.

It is not an unprimeable number, because it can be changed into a prime (1603421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1138 + ... + 2121.

It is an arithmetic number, because the mean of its divisors is an integer number (159740).

2^1603428 is an apocalyptic number.

It is an amenable number.

1603428 is an abundant number, since it is smaller than the sum of its proper divisors (2230332).

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

1603428 is a wasteful number, since it uses less digits than its factorization.

1603428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3307 (or 3305 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 24.

The square root of 1603428 is about 1266.2653750301. The cubic root of 1603428 is about 117.0441793855.

Adding to 1603428 its reverse (8243061), we get a palindrome (9846489).

The spelling of 1603428 in words is "one million, six hundred three thousand, four hundred twenty-eight".