3523540 has 24 divisors (see below), whose sum is σ = 7581672. Its totient is φ = 1374720.

The previous prime is 3523519. The next prime is 3523561. The reversal of 3523540 is 453253.

It is an interprime number because it is at equal distance from previous prime (3523519) and next prime (3523561).

It can be written as a sum of positive squares in 4 ways, for example, as 11664 + 3511876 = 108^2 + 1874^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1329 + ... + 2968.

It is an arithmetic number, because the mean of its divisors is an integer number (315903).

Almost surely, 2^3523540 is an apocalyptic number.

It is an amenable number.

3523540 is an abundant number, since it is smaller than the sum of its proper divisors (4058132).

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

3523540 is a wasteful number, since it uses less digits than its factorization.

3523540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4347 (or 4345 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 22.

The square root of 3523540 is about 1877.1094800251. The cubic root of 3523540 is about 152.1690754806.

Adding to 3523540 its reverse (453253), we get a palindrome (3976793).

The spelling of 3523540 in words is "three million, five hundred twenty-three thousand, five hundred forty".