3440624 has 40 divisors (see below), whose sum is σ = 7378992. Its totient is φ = 1541120.

The previous prime is 3440621. The next prime is 3440627. The reversal of 3440624 is 4260443.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (3440621) and next prime (3440627).

It is a self number, because there is not a number n which added to its sum of digits gives 3440624.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3440621) 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, 19802 + ... + 19974.

Almost surely, 2^3440624 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 3440624, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3689496).

3440624 is an abundant number, since it is smaller than the sum of its proper divisors (3938368).

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

3440624 is a wasteful number, since it uses less digits than its factorization.

3440624 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 305 (or 299 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 23.

The square root of 3440624 is about 1854.8919105975. The cubic root of 3440624 is about 150.9659733572.

The spelling of 3440624 in words is "three million, four hundred forty thousand, six hundred twenty-four".