1004223040 has 56 divisors (see below), whose sum is σ = 2424120120. Its totient is φ = 396177408.

The previous prime is 1004223037. The next prime is 1004223067. The reversal of 1004223040 is 403224001.

It can be written as a sum of positive squares in 4 ways, for example, as 109495296 + 894727744 = 10464^2 + 29912^2 .

It is a Harshad number since it is a multiple of its sum of digits (16).

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, 1866 + ... + 44854.

Almost surely, 2^1004223040 is an apocalyptic number.

1004223040 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 1004223040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1212060060).

1004223040 is an abundant number, since it is smaller than the sum of its proper divisors (1419897080).

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

1004223040 is an equidigital number, since it uses as much as digits as its factorization.

1004223040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43079 (or 43069 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 1004223040 is about 31689.4783800554. The cubic root of 1004223040 is about 1001.4057030730.

Adding to 1004223040 its reverse (403224001), we get a palindrome (1407447041).

The spelling of 1004223040 in words is "one billion, four million, two hundred twenty-three thousand, forty".