3452240 has 40 divisors (see below), whose sum is σ = 8758368. Its totient is φ = 1255040.

The previous prime is 3452237. The next prime is 3452249. The reversal of 3452240 is 422543.

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-2 number, since 2×3452240² = 23835922035200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3452249) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1082 + ... + 2841.

Almost surely, 2^3452240 is an apocalyptic number.

It is an amenable number.

3452240 is an abundant number, since it is smaller than the sum of its proper divisors (5306128).

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

3452240 is a wasteful number, since it uses less digits than its factorization.

3452240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3947 (or 3941 counting only the distinct ones).

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

The square root of 3452240 is about 1858.0204519865. The cubic root of 3452240 is about 151.1356761935.

Adding to 3452240 its reverse (422543), we get a palindrome (3874783).

The spelling of 3452240 in words is "three million, four hundred fifty-two thousand, two hundred forty".