7044540 has 48 divisors (see below), whose sum is σ = 19891872. Its totient is φ = 1862656.

The previous prime is 7044539. The next prime is 7044547. The reversal of 7044540 is 454407.

7044540 = 400² + 401² + ... + 439².

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 7044540.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7044547) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7792 + ... + 8648.

It is an arithmetic number, because the mean of its divisors is an integer number (414414).

Almost surely, 2^7044540 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 7044540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9945936).

7044540 is an abundant number, since it is smaller than the sum of its proper divisors (12847332).

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

7044540 is a wasteful number, since it uses less digits than its factorization.

7044540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1006 (or 1004 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 24.

The square root of 7044540 is about 2654.1552328377. The cubic root of 7044540 is about 191.6979843805.

Adding to 7044540 its reverse (454407), we get a palindrome (7498947).

The spelling of 7044540 in words is "seven million, forty-four thousand, five hundred forty".