3504720 has 80 divisors (see below), whose sum is σ = 11517120. Its totient is φ = 878592.

The previous prime is 3504719. The next prime is 3504727. The reversal of 3504720 is 274053.

It is a happy number.

3504720 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3504727) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3651 + ... + 4509.

It is an arithmetic number, because the mean of its divisors is an integer number (143964).

Almost surely, 2^3504720 is an apocalyptic number.

3504720 is a gapful number since it is divisible by the number (30) 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 3504720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5758560).

3504720 is an abundant number, since it is smaller than the sum of its proper divisors (8012400).

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

3504720 is a wasteful number, since it uses less digits than its factorization.

3504720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 892 (or 886 counting only the distinct ones).

The product of its (nonzero) digits is 840, while the sum is 21.

The square root of 3504720 is about 1872.0897414387. The cubic root of 3504720 is about 151.8976688885.

Adding to 3504720 its reverse (274053), we get a palindrome (3778773).

It can be divided in two parts, 3504 and 720, that added together give a palindrome (4224).

The spelling of 3504720 in words is "three million, five hundred four thousand, seven hundred twenty".