3540224 has 18 divisors (see below), whose sum is σ = 7067130. Its totient is φ = 1769984.

The previous prime is 3540223. The next prime is 3540247. The reversal of 3540224 is 4220453.

It can be written as a sum of positive squares in only one way, i.e., 2458624 + 1081600 = 1568^2 + 1040^2 .

It is a d-powerful number, because it can be written as 3¹³ + 5⁷ + 4⁹ + 0 + 2¹⁵ + 2¹⁹ + 4¹⁰ .

It is a junction number, because it is equal to n+sod(n) for n = 3540196 and 3540205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3540223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6659 + ... + 7170.

Almost surely, 2^3540224 is an apocalyptic number.

It is an amenable number.

3540224 is a deficient number, since it is larger than the sum of its proper divisors (3526906).

3540224 is an equidigital number, since it uses as much as digits as its factorization.

3540224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13845 (or 13831 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 20.

The square root of 3540224 is about 1881.5482986094. The cubic root of 3540224 is about 152.4088714717.

Adding to 3540224 its reverse (4220453), we get a palindrome (7760677).

The spelling of 3540224 in words is "three million, five hundred forty thousand, two hundred twenty-four".