3470240 has 72 divisors (see below), whose sum is σ = 8779428. Its totient is φ = 1295360.

The previous prime is 3470239. The next prime is 3470249. The reversal of 3470240 is 420743.

It is a happy number.

3470240 is nontrivially palindromic in base 3.

3470240 is digitally balanced in base 2 and base 5, because in such bases it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 3055504 + 414736 = 1748^2 + 644^2 .

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 (3470249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 84620 + ... + 84660.

Almost surely, 2^3470240 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3470240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4389714).

3470240 is an abundant number, since it is smaller than the sum of its proper divisors (5309188).

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

3470240 is a wasteful number, since it uses less digits than its factorization.

3470240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102 (or 71 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 20.

The square root of 3470240 is about 1862.8580192811. The cubic root of 3470240 is about 151.3978950897.

Adding to 3470240 its reverse (420743), we get a palindrome (3890983).

The spelling of 3470240 in words is "three million, four hundred seventy thousand, two hundred forty".