1004544 has 66 divisors (see below), whose sum is σ = 2927210. Its totient is φ = 331776.

The previous prime is 1004537. The next prime is 1004551. The reversal of 1004544 is 4454001.

It is an interprime number because it is at equal distance from previous prime (1004537) and next prime (1004551).

It can be written as a sum of positive squares in only one way, i.e., 921600 + 82944 = 960^2 + 288^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a nialpdrome in base 4 and base 16.

It is a zygodrome in base 4.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 9162 + ... + 9270.

2^1004544 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 1004544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1463605).

1004544 is an abundant number, since it is smaller than the sum of its proper divisors (1922666).

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

1004544 is a wasteful number, since it uses less digits than its factorization.

1004544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135 (or 114 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 18.

The square root of 1004544 is about 1002.2694248554. The cubic root of 1004544 is about 100.1512378226.

Adding to 1004544 its reverse (4454001), we get a palindrome (5458545).

The spelling of 1004544 in words is "one million, four thousand, five hundred forty-four".