1004428 has 12 divisors (see below), whose sum is σ = 1861272. Its totient is φ = 472640.

The previous prime is 1004401. The next prime is 1004429. The reversal of 1004428 is 8244001.

It is not an unprimeable number, because it can be changed into a prime (1004429) 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 3 ways as a sum of consecutive naturals, for example, 7318 + ... + 7453.

It is an arithmetic number, because the mean of its divisors is an integer number (155106).

2^1004428 is an apocalyptic number.

It is an amenable number.

1004428 is a deficient number, since it is larger than the sum of its proper divisors (856844).

1004428 is a wasteful number, since it uses less digits than its factorization.

1004428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14792 (or 14790 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 19.

The square root of 1004428 is about 1002.2115545133. The cubic root of 1004428 is about 100.1473826768.

Adding to 1004428 its reverse (8244001), we get a palindrome (9248429).

The spelling of 1004428 in words is "one million, four thousand, four hundred twenty-eight".