1004722840 has 64 divisors (see below), whose sum is σ = 2485105920. Its totient is φ = 362544000.

The previous prime is 1004722813. The next prime is 1004722841. The reversal of 1004722840 is 482274001.

It is a junction number, because it is equal to n+sod(n) for n = 1004722799 and 1004722808.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1004722841) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 48925 + ... + 66355.

It is an arithmetic number, because the mean of its divisors is an integer number (38829780).

Almost surely, 2^1004722840 is an apocalyptic number.

1004722840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1004722840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1242552960).

1004722840 is an abundant number, since it is smaller than the sum of its proper divisors (1480383080).

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

1004722840 is a wasteful number, since it uses less digits than its factorization.

1004722840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17584 (or 17580 counting only the distinct ones).

The product of its (nonzero) digits is 3584, while the sum is 28.

The square root of 1004722840 is about 31697.3632972839. The cubic root of 1004722840 is about 1001.5718081248.

Adding to 1004722840 its reverse (482274001), we get a palindrome (1486996841).

The spelling of 1004722840 in words is "one billion, four million, seven hundred twenty-two thousand, eight hundred forty".