3521140 has 36 divisors (see below), whose sum is σ = 8604036. Its totient is φ = 1206912.

The previous prime is 3521131. The next prime is 3521143. The reversal of 3521140 is 411253.

It can be written as a sum of positive squares in 2 ways, for example, as 1192464 + 2328676 = 1092^2 + 1526^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3521143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 817 + ... + 2776.

It is an arithmetic number, because the mean of its divisors is an integer number (239001).

Almost surely, 2^3521140 is an apocalyptic number.

It is an amenable number.

3521140 is an abundant number, since it is smaller than the sum of its proper divisors (5082896).

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

3521140 is a wasteful number, since it uses less digits than its factorization.

3521140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3616 (or 3607 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 3521140 is about 1876.4700903558. The cubic root of 3521140 is about 152.1345184981.

Adding to 3521140 its reverse (411253), we get a palindrome (3932393).

The spelling of 3521140 in words is "three million, five hundred twenty-one thousand, one hundred forty".