1004890 has 12 divisors (see below), whose sum is σ = 1814526. Its totient is φ = 400688.

The previous prime is 1004873. The next prime is 1004903. The reversal of 1004890 is 984001.

It can be written as a sum of positive squares in 3 ways, for example, as 284089 + 720801 = 533^2 + 849^2 .

It is a zygodrome in base 4.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3012 + ... + 3328.

2^1004890 is an apocalyptic number.

1004890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1004890 is a deficient number, since it is larger than the sum of its proper divisors (809636).

1004890 is an frugal number, since it uses more digits than its factorization.

1004890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 641 (or 324 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 22.

The square root of 1004890 is about 1002.4420182734. The cubic root of 1004890 is about 100.1627350294.

Adding to 1004890 its reverse (984001), we get a palindrome (1988891).

The spelling of 1004890 in words is "one million, four thousand, eight hundred ninety".