3520044 has 48 divisors (see below), whose sum is σ = 9959040. Its totient is φ = 1066320.

The previous prime is 3520043. The next prime is 3520051. The reversal of 3520044 is 4400253.

It is a happy number.

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

It is a junction number, because it is equal to n+sod(n) for n = 3519999 and 3520026.

It is not an unprimeable number, because it can be changed into a prime (3520043) 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, 294 + ... + 2669.

It is an arithmetic number, because the mean of its divisors is an integer number (207480).

Almost surely, 2^3520044 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 3520044, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4979520).

3520044 is an abundant number, since it is smaller than the sum of its proper divisors (6438996).

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

3520044 is a wasteful number, since it uses less digits than its factorization.

3520044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2987 (or 2979 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 18.

The square root of 3520044 is about 1876.1780299321. The cubic root of 3520044 is about 152.1187322532.

Adding to 3520044 its reverse (4400253), we get a palindrome (7920297).

The spelling of 3520044 in words is "three million, five hundred twenty thousand, forty-four".