2004428 has 12 divisors (see below), whose sum is σ = 3518592. Its totient is φ = 999120.

The previous prime is 2004421. The next prime is 2004433. The reversal of 2004428 is 8244002.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (2004421) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1301 + ... + 2387.

It is an arithmetic number, because the mean of its divisors is an integer number (293216).

2^2004428 is an apocalyptic number.

It is an amenable number.

2004428 is a deficient number, since it is larger than the sum of its proper divisors (1514164).

2004428 is a wasteful number, since it uses less digits than its factorization.

2004428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1552 (or 1550 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 20.

The square root of 2004428 is about 1415.7782312213. The cubic root of 2004428 is about 126.0850186264.

The spelling of 2004428 in words is "two million, four thousand, four hundred twenty-eight".