1004820 has 24 divisors (see below), whose sum is σ = 2813664. Its totient is φ = 267936.

The previous prime is 1004797. The next prime is 1004873. The reversal of 1004820 is 284001.

1004820 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 1004820.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8314 + ... + 8433.

It is an arithmetic number, because the mean of its divisors is an integer number (117236).

2^1004820 is an apocalyptic number.

1004820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1004820 is an abundant number, since it is smaller than the sum of its proper divisors (1808844).

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

1004820 is a wasteful number, since it uses less digits than its factorization.

1004820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16759 (or 16757 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

The square root of 1004820 is about 1002.4071029277. The cubic root of 1004820 is about 100.1604092179.

Adding to 1004820 its reverse (284001), we get a palindrome (1288821).

The spelling of 1004820 in words is "one million, four thousand, eight hundred twenty".