1004253444 has 96 divisors (see below), whose sum is σ = 2776032000. Its totient is φ = 312860160.

The previous prime is 1004253421. The next prime is 1004253449. The reversal of 1004253444 is 4443524001.

It is a happy number.

It is a super-2 number, since 2×1004253444² = 2017049959571722272, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (1004253449) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 271729 + ... + 275399.

It is an arithmetic number, because the mean of its divisors is an integer number (28917000).

Almost surely, 2^1004253444 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1004253444, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1388016000).

1004253444 is an abundant number, since it is smaller than the sum of its proper divisors (1771778556).

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

1004253444 is a wasteful number, since it uses less digits than its factorization.

1004253444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3850 (or 3842 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 27.

The square root of 1004253444 is about 31689.9580940083. The cubic root of 1004253444 is about 1001.4158092050.

Adding to 1004253444 its reverse (4443524001), we get a palindrome (5447777445).

The spelling of 1004253444 in words is "one billion, four million, two hundred fifty-three thousand, four hundred forty-four".