1004780 has 24 divisors (see below), whose sum is σ = 2411808. Its totient is φ = 344448.

The previous prime is 1004779. The next prime is 1004797. The reversal of 1004780 is 874001.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (20).

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, 3449 + ... + 3728.

It is an arithmetic number, because the mean of its divisors is an integer number (100492).

2^1004780 is an apocalyptic number.

1004780 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1004780 is an abundant number, since it is smaller than the sum of its proper divisors (1407028).

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

1004780 is a wasteful number, since it uses less digits than its factorization.

1004780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7193 (or 7191 counting only the distinct ones).

The product of its (nonzero) digits is 224, while the sum is 20.

The square root of 1004780 is about 1002.3871507556. The cubic root of 1004780 is about 100.1590801343.

Adding to 1004780 its reverse (874001), we get a palindrome (1878781).

The spelling of 1004780 in words is "one million, four thousand, seven hundred eighty".