3521340 has 48 divisors (see below), whose sum is σ = 10956960. Its totient is φ = 938880.

The previous prime is 3521303. The next prime is 3521341. The reversal of 3521340 is 431253.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3521341) 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, 2721 + ... + 3800.

It is an arithmetic number, because the mean of its divisors is an integer number (228270).

Almost surely, 2^3521340 is an apocalyptic number.

3521340 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

3521340 is an abundant number, since it is smaller than the sum of its proper divisors (7435620).

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

3521340 is a wasteful number, since it uses less digits than its factorization.

3521340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6539 (or 6531 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 18.

The square root of 3521340 is about 1876.5233811493. The cubic root of 3521340 is about 152.1373988463.

Adding to 3521340 its reverse (431253), we get a palindrome (3952593).

It can be divided in two parts, 35213 and 40, that added together give a palindrome (35253).

The spelling of 3521340 in words is "three million, five hundred twenty-one thousand, three hundred forty".